CN201345509Y - SF* switch house environment intelligent monitoring system - Google Patents
SF* switch house environment intelligent monitoring system Download PDFInfo
- Publication number
- CN201345509Y CN201345509Y CNU2008202336638U CN200820233663U CN201345509Y CN 201345509 Y CN201345509 Y CN 201345509Y CN U2008202336638 U CNU2008202336638 U CN U2008202336638U CN 200820233663 U CN200820233663 U CN 200820233663U CN 201345509 Y CN201345509 Y CN 201345509Y
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- control system
- electrochemical sensor
- switch gear
- gear room
- sampling
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses an SF<6> switch house environment intelligent monitoring system, which comprises a host control computer and a centralized-control computer. The host control computer is used to store the data signals collected by the centralized-control computer and to send a command for controlling the operation of the centralized-control computer. The centralized-control computer additionally comprises an auxiliary sampling device. The auxiliary sampling device can sample the gas at a plurality of points in the switch house and transmit the sampled gas to an electrochemical sensor for analysis. The centralized-control computer can control an indoor ventilation device to work according to the processing result or control the auxiliary sampling device to continuously sample the gas of other positions in the switch house for analysis. The utility model has the advantages that the monitoring system is provided with the auxiliary sampling device arranged in front of the SF<6> electrochemical sensor, only one electrochemical sensor is required to realize the multi-point sequential sampling in the switch house of the electrical device through adopting the embedded industrial control method, the multi-point detection is realized while the measuring accuracy is ensured, the multi-point detection can exactly reflect the environmental conditions in the switch house and the dangers caused by detection errors are avoided.
Description
Technical field
The utility model relates to a kind of sulfur hexafluoride electrical equipment the indoor environment online monitoring system is installed.
Background technology
General SF
6Switch gear room's environmental monitoring equipment, by environmental data collecting, compositions such as signal processing and ventilation equipment control.At SF
6SF in switch gear room's environmental monitoring system
6Transducer is technological difficulties, uses at present to be semiconductor transducer, halogen sensor and electrochemical sensor more widely.There is the temperature drift problem in semiconductor transducer, and halogen sensor useful life is of short duration and be subjected to other gases easily and disturb, and these two kinds of sensing technologies also exist the low shortcoming of accuracy of detection.Highly sensitive, characteristics such as the range of linearity is wide, good stability that electrochemical sensor has, but costing an arm and a leg of it generally only is used for single-point and detects, and can't realize SF
6The switch indoor multipoint detects, so the testing result error is bigger, can't reflect SF really
6The switch indoor environment.
The utility model content
At the problem that prior art exists, the utility model provides a kind of online monitoring system that can take a sample to multiple spot in the electric equipment installation chamber.
For achieving the above object, the utility model SF
6Switch gear room's ambient intelligence supervisory control system comprises main control system and collection control machine, and described collection control machine comprises that electrochemical sensor is used for gathering the SF of electric equipment switch gear room
6And O
2Content and humiture value, described main control system is stored the data-signal that described collection control machine collects, and the described collection control of transmission commands for controlling machine work, it is characterized in that, described collection control machine also comprises the sampling servicing unit, described sampling servicing unit can be taken a sample to the switch indoor multipoint, and gas sampled is sent to described electrochemical sensor analyzing and processing respectively, continue indoor other position sample analysis of switch according to the ventilation equipment work in the described collection control of the result machine control installation room or by described sampling servicing unit.
Further, described sampling servicing unit comprises electromagnetically operated valve, sampling probe, filter and vacuum pump, described sampling probe is arranged on each test point of electric equipment switch gear room, continuous by the described sampling probe of pneumatics flexible pipe with corresponding electromagnetically operated valve air inlet, described electromagnetically operated valve gas outlet connects filter and links to each other with described vacuum pump, and the gas of being drawn when described vacuum pump is worked sends described electrochemical sensor analyzing and processing to.
Further, described sampling servicing unit also comprises cleaning device, and after described electrochemical sensor work was finished, described cleaning device cleaned described electrochemical sensor.
Further, described cleaning device comprises sampling probe, electromagnetically operated valve and caisson, described sampling probe one end links to each other with described caisson, the other end connects described electromagnetically operated valve, and link to each other with described vacuum pump, by described vacuum pump the clean gas in the described caisson is flowed to described electrochemical sensor.
Further, described electrochemical sensor comprises O
2Electrochemical sensor and SF
6Electrochemical sensor, the gas that described vacuum pump is extracted carries out O respectively
2Content and SF
6Content detection.
Further, also be provided with infrared ray sensor on the described main control system, whether described infrared ray sensor has the people before being used to respond to main frame.
Further, also be provided with sound prompt device on the described main control system, described sound prompt device receives the data message of gathering from described collection control machine by main control system, points out environmental aspect in the current switch gear room automatically.
Only be used for the deficiency that single-point detects in order to overcome electrochemical sensor, supervisory control system of the present utility model is at SF
6The preposition sampling servicing unit of electrochemical sensor, utilize built-in industrial control only to need to adopt an electrochemical sensor just can realize the multi-point sequent sampling is carried out in a plurality of positions in the electric equipment switch gear room, realized the multiple spot detection when guaranteeing certainty of measurement, multiple spot detects and has reflected the environmental aspect in the switch gear room really, prevents owing to detect the danger that error causes.
Description of drawings
Fig. 1 is the utility model supervisory control system complete machine frame diagram;
Fig. 2 is the sampling servicing unit and collection control machine connection diagram of the utility model supervisory control system;
Fig. 3-Fig. 6 is the sampling servicing unit control circuit figure of the utility model supervisory control system;
Fig. 7 is the utility model supervisory control system collection control machine inner frame figure;
Fig. 8 is the utility model supervisory control system main control system inner frame figure.
Embodiment
As illustrated in fig. 1 and 2, the utility model SF
6Switch gear room's ambient intelligence supervisory control system comprises main control system 1, collection control machine 2 and sampling servicing unit 3, and collection control machine 2 comprises that electrochemical sensor is used for gathering the SF of electric equipment switch gear room
6And O
2Content and humiture value, the data-signal that main control system 1 saveset control machine 2 collects, and transmission commands for controlling collection control machine 2 work, collection control machine 2 connects a sampling servicing unit 3, sampling servicing unit 3 can be taken a sample to the switch indoor multipoint, and gas sampled is sent to described electrochemical sensor analyzing and processing respectively, continue indoor other position sample of switch is analyzed according to the ventilation equipment work in the result collection control machine 2 control installation rooms or by sampling servicing unit 3, ventilation equipment are made of many groups ventilating fan.
Draw this monitoring point gas componant through 20 minutes lasting sampling analyses, if be SF normally
6Concentration is lower than 1000PPM and O
2Concentration is greater than 18%, the sampling auxiliary control circuit sends the electromagnetically operated valve that control signal is closed current monitoring point correspondence, start the corresponding electromagnetically operated valve of pure air point, extract pure air " cleaning " transducer, remove the residual gas of monitoring point in transducer.The sampling auxiliary control circuit sent control signal and closes the corresponding electromagnetically operated valve of pure air point after " cleaning " finished, and started the electromagnetically operated valve of next monitoring point.
If think the undesired SF of being after analyzing
6Concentration is greater than 1000PPM or O
2Concentration is lower than 18%, and the sampling auxiliary control circuit keeps current valve opening solenoid valve state, SF
6Transducer and other transducers continue current monitoring point corresponding simulating signal is input in the sample circuit, meanwhile start ventilation equipment.After sampling analysis is normal, close ventilation equipment, the sampling auxiliary control circuit is closed current electromagnetically operated valve, starts the corresponding electromagnetically operated valve of pure air point, closes the electromagnetically operated valve of pure air point correspondence after 5 minutes and starts the electromagnetically operated valve of next monitoring point correspondence.
After having monitored last point, the sampling auxiliary control circuit will be back to first monitoring point.Circulation so repeatedly can realize that the gas sequential sampling of a plurality of monitoring points detects.Each point needs to continue 20 minutes monitoring, needs to extract 5 minutes pure air " cleaning " SF after monitoring is finished
6Electrochemical sensor, if the undesired monitoring that then also can prolong this point of the gas componant that monitors is till normal, the upper limit is 32 so the single device monitoring is counted.
Sampling auxiliary control circuit such as Fig. 3-Fig. 6.Single chip computer AT 89C55WD is as control chip (MCU in the collection control machine) among Fig. 3, and two pins of P14 and P15 externally send control signal.Serial input among Fig. 4-Fig. 6 is changeed 8 parallel-by-bit pio chip 74LS164 cascades together, by P14 and the unified control of P15, P14 is a serial clock signal, and P15 is input to serial input port A and B, and line output outputs to 12V relay control end through light every TLP521-4.Relay output end is connected to electromagnetically operated valve, if the parallel position of the corresponding control of relay is output as 0, then relay output end output 220V voltage drives corresponding solenoid valve and opens, otherwise relay output 0V (default conditions).Fig. 4-Fig. 6 marks 24 relay output end mouths altogether, promptly can control 24 electromagnetically operated valves, and relay can expand to 32 at most.
Shown in Fig. 1 and 7, gas enters into SF through sampling servicing unit 3
6Electrochemical sensor, SF
6Electrochemical sensor and O
2Transducer (in the filter B of Fig. 2) is with SF
6, O
2Two kinds of gas concentration analogues value are sent to sampling and data processing unit, and the temperature sensor and the humidity sensor that collect simultaneously on the control machine 2 are also sent into the humiture analogue value sampling and data processing unit.After data processing is intact numerical value is stored, is sent instructions to main control system 1 by communication and instruction coding/decoding module simultaneously, after main control system 1 is replied with data upload.Integrated debugging interface on the collection control machine 2 inserts behind the debugger and can be provided with the monitoring channel number of collection control machine 2, data processing parameter, channel monitoring time etc., the data of handling can also be shown on debugger.Main control system 1 generally is placed on the installation room doorway or is placed in the master-control room, and collection control machine 2 is sent to signal and power supply in the main control system 1 by twisted-pair feeder.
Shown in Fig. 1 and 8, main control system 1 with 2 communications of collection control machine after, with on the data that transmit analyze and store, and on liquid crystal display screen, show SF
6Concentration value, O
2Concentration value, temperature and humidity numerical value.Send command adapted thereto to collection control machine 2 according to analysis result, the order that collection control machine 2 response main control systems 1 send.If analysis result is normal, then collects control machine 2 and switch the monitoring point according to related procedure; As if analysis result is undesired, then collects control machine 2 startup ventilation equipment 4 and continues the current monitoring point of sampling, when the normal analysis result of main control system 1 transmission instructs, carries out and switches the monitoring point flow process.When analysis result is undesired, the voice alerting unit on the main control system 1 will be carried out audio alert automatically, point out environmental aspect in the current switch gear room, when analysis result just often, voice suggestion will stop.In addition, also be provided with infrared ray sensor on the main control system 1, can sense automatically before the someone stand in main frame, if voice environmental aspect in the current installation room of prompting is automatically arranged then.
The utility model SF
6Switch gear room's ambient intelligence supervisory control system has realized the multiple spot detection when guaranteeing certainty of measurement.Can detect and count nearly 32; SF
6Detection range: 10-1500ppm, precision is 1ppm; O
2Detection range: 1%-25%, precision is ± 1%; Temperature detection scope :-20 ℃-99 ℃; Humidity Detection scope: 5%-99%RH.SF wherein
6Preset value is 1000ppm, O
2Preset value is 18%.SF
6Concentration greater than 1000ppm or/and O2 concentration is lower than 18% for transfiniting.
Claims (7)
1.SF
6Switch gear room's ambient intelligence supervisory control system comprises main control system and collection control machine, and described collection control machine comprises that electrochemical sensor is used for gathering the SF of electric equipment switch gear room
6And O
2Content and humiture value, described main control system is stored the data-signal that described collection control machine collects, and the described collection control of transmission commands for controlling machine work, it is characterized in that, described collection control machine also comprises the sampling servicing unit, described sampling servicing unit can be taken a sample to the switch indoor multipoint, and gas sampled is sent to described electrochemical sensor analyzing and processing respectively, continue indoor other position sample analysis of switch according to the ventilation equipment work in the described collection control of the result machine control installation room or by described sampling servicing unit.
2. SF as claimed in claim 1
6Switch gear room's ambient intelligence supervisory control system, it is characterized in that, described sampling servicing unit comprises electromagnetically operated valve, sampling probe, filter and vacuum pump, described sampling probe is arranged on each test point of electric equipment switch gear room, continuous by the described sampling probe of pneumatics flexible pipe with corresponding electromagnetically operated valve air inlet, described electromagnetically operated valve gas outlet connects filter and links to each other with described vacuum pump, and the gas of being drawn when described vacuum pump is worked sends described electrochemical sensor analyzing and processing to.
3. SF as claimed in claim 1
6Switch gear room's ambient intelligence supervisory control system is characterized in that, described sampling servicing unit also comprises cleaning device, and after described electrochemical sensor work was finished, described cleaning device cleaned described electrochemical sensor.
4. SF as claimed in claim 3
6Switch gear room's ambient intelligence supervisory control system, it is characterized in that, described cleaning device comprises sampling probe, electromagnetically operated valve and caisson, described sampling probe one end links to each other with described caisson, the other end connects described electromagnetically operated valve, and link to each other with described vacuum pump, by described vacuum pump the clean gas in the described caisson is flowed to described electrochemical sensor.
5. SF as claimed in claim 1
6Switch gear room's ambient intelligence supervisory control system is characterized in that described electrochemical sensor comprises O
2Electrochemical sensor and SF
6Electrochemical sensor, the gas that described vacuum pump is extracted carries out O respectively
2Content and SF
6Content detection.
6. SF as claimed in claim 1
6Switch gear room's ambient intelligence supervisory control system is characterized in that, also is provided with infrared ray sensor on the described main control system, and whether described infrared ray sensor has the people before being used to respond to main frame.
7. SF as claimed in claim 1
6Switch gear room's ambient intelligence supervisory control system, it is characterized in that, also be provided with sound prompt device on the described main control system, described sound prompt device receives the data message of gathering from described collection control machine by main control system, points out environmental aspect in the current switch gear room automatically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202336638U CN201345509Y (en) | 2008-12-24 | 2008-12-24 | SF* switch house environment intelligent monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202336638U CN201345509Y (en) | 2008-12-24 | 2008-12-24 | SF* switch house environment intelligent monitoring system |
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| Publication Number | Publication Date |
|---|---|
| CN201345509Y true CN201345509Y (en) | 2009-11-11 |
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ID=41277092
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202336638U Expired - Fee Related CN201345509Y (en) | 2008-12-24 | 2008-12-24 | SF* switch house environment intelligent monitoring system |
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|---|---|
| CN (1) | CN201345509Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104380419A (en) * | 2012-02-20 | 2015-02-25 | 富兰克林加油系统公司 | Moisture monitoring system |
-
2008
- 2008-12-24 CN CNU2008202336638U patent/CN201345509Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104380419A (en) * | 2012-02-20 | 2015-02-25 | 富兰克林加油系统公司 | Moisture monitoring system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20091111 Termination date: 20171224 |