CN209673638U - A kind of infrared SF6 on-line monitoring system that automatic flow velocity is adjusted - Google Patents
A kind of infrared SF6 on-line monitoring system that automatic flow velocity is adjusted Download PDFInfo
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- CN209673638U CN209673638U CN201920453592.0U CN201920453592U CN209673638U CN 209673638 U CN209673638 U CN 209673638U CN 201920453592 U CN201920453592 U CN 201920453592U CN 209673638 U CN209673638 U CN 209673638U
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Abstract
The utility model relates to a kind of infrared SF6 on-line monitoring systems that automatic flow velocity is adjusted, including main control chip, SF6 infrared sensor, air flow rate sensor, pumping alignment circuit, warning circuit, communicating circuit and power circuit；The SF6 infrared sensor, air flow rate sensor, warning circuit and communicating circuit are connected to main control chip；The pumping alignment circuit includes air exhauster, triode and metal-oxide-semiconductor；The base stage of the triode is connected to main control chip, emitter ground connection, and collector is connected to the grid of metal-oxide-semiconductor, and the source electrode of the metal-oxide-semiconductor is connected to power circuit, and drain electrode is connected to one end of air exhauster, the other end ground connection of the air exhauster；The power circuit is connected to main control chip, SF6 infrared sensor, air flow rate sensor, pumping alignment circuit, warning circuit and communicating circuit.Allow SF6 infrared sensor to carry out detection SF6 gas under a stable gas flow rate, and then detects and obtain the exact value of SF6 gas content.
Description
Technical field
The utility model relates to SF6 on-line monitoring system, in particular to a kind of infrared SF6 that automatic flow velocity is adjusted is supervised online
Examining system.
Background technique
SF6 gas is a kind of inertia insulation non-toxic gas, in transformer substation switch equipment, SF6 gas leakage contribution to be electric
The normal operation of power equipment will also result in serious greenhouse effects, just seem particularly significant to SF6 gas leakage on-line monitoring,
SF6 gas has strong absorption characteristic to infrared light, measures usually using infrared type SF6 sensor to SF6 gas.And it is red
The measurement accuracy that external form SF6 sensor measurement determines principle is related with air-flow velocity, and response speed is slow when flow velocity is slow, measurement accuracy
Height, fast response time when flow velocity is fast, but measurement accuracy is low.It is difficult to realize the requirement of quick response and precise measurement.
Utility model content
For this reason, it may be necessary to provide a kind of infrared SF6 on-line monitoring system that automatic flow velocity is adjusted, solve existing due to flow velocity shadow
Ring the low problem of the precision of SF6 measurement.
To achieve the above object, a kind of infrared SF6 on-line monitoring system that automatic flow velocity is adjusted is inventor provided, including
Main control chip, SF6 infrared sensor, air flow rate sensor, pumping alignment circuit, warning circuit, communicating circuit and power supply electricity
Road；
The SF6 infrared sensor, air flow rate sensor, warning circuit and communicating circuit are connected to main control chip；
The pumping alignment circuit includes air exhauster, triode and metal-oxide-semiconductor；The base stage of the triode is connected to master control core
Piece, emitter ground connection, collector are connected to the grid of metal-oxide-semiconductor, and the source electrode of the metal-oxide-semiconductor is connected to power circuit, drain electrode connection
In one end of air exhauster, the other end of the air exhauster is grounded；
The power circuit be connected to main control chip, SF6 infrared sensor, air flow rate sensor, pumping alignment circuit,
Warning circuit and communicating circuit.
It advanced optimizes, the warning circuit is LED light.
It advanced optimizes, the communicating circuit includes single supply electrical level transferring chip and RS-232 serial ports, the RS-232
Serial ports is connected to main control chip by single supply electrical level transferring chip.
It advanced optimizes, the main control chip is single-chip microcontroller PIC16F877A.
It being different from the prior art, above-mentioned technical proposal, main control chip is evacuated gas circuit by being evacuated alignment circuit, and
Faster flow velocity is transmitted to SF6 infrared sensor and carries out when detecting the leakage of SF6 gas, then passing through alarm to SF6 gas detection
Circuit is alarmed, while being controlled pumping alignment circuit attenuating flow velocity and being evacuated, and being examined by air flow rate sensor
Gas flow rate in gas circuit is surveyed, Master control chip carries out control gas entirety flow velocity and reaches a stable gas flow rate, so that SF6
Infrared sensor can carry out detection SF6 gas under a stable gas flow rate, and then detect and obtain SF6 gas content
Exact value.
Detailed description of the invention
Fig. 1 is a kind of structural representation for the infrared SF6 on-line monitoring system that automatic flow velocity is adjusted described in specific embodiment
Figure；
Fig. 2 is a kind of circuit diagram of main control chip described in specific embodiment；
Fig. 3 is a kind of circuit diagram of SF6 infrared sensor described in specific embodiment；
Fig. 4 is a kind of circuit diagram of air flow rate sensor described in specific embodiment；
Fig. 5 is a kind of circuit diagram that alignment circuit is evacuated described in specific embodiment；
Fig. 6 is a kind of circuit diagram of power circuit described in specific embodiment；
Fig. 7 is a kind of circuit diagram of LED light described in specific embodiment；
Fig. 8 is a kind of circuit diagram of communicating circuit described in specific embodiment.
Description of symbols:
110, main control chip,
120, SF6 infrared sensor,
130, air flow rate sensor,
140, it is evacuated alignment circuit,
150, warning circuit,
160, communicating circuit.
Specific embodiment
Technology contents, construction feature, the objects and the effects for detailed description technical solution, below in conjunction with specific reality
It applies example and attached drawing is cooperated to be explained in detail.
Please refer to Fig. 1-6, a kind of infrared SF6 on-line monitoring system that automatic flow velocity is adjusted described in the present embodiment, including master
Control chip 110, SF6 infrared sensor 120, air flow rate sensor 130, pumping alignment circuit 140, warning circuit 150, communication
Circuit 160 and power circuit；
The SF6 infrared sensor 120, air flow rate sensor 130, warning circuit 150 and communicating circuit 160 are connected to
Main control chip 110；Wherein main control chip 110 uses single-chip microcontroller PIC16F877A, and single-chip microcontroller PIC16F877A is using 14
RISC instruction system, be internally integrated A/D converter, EEPROM, analog comparator, band compare with the timer of capture function/
Counter, PWM output, Asynchronous Serial Communication Circuit etc..Wherein SF6 infrared sensor can use the SF6 of model SM-SF6
Infrared sensor, air flow rate sensor can use signal for the air flow rate sensor of NU.ER.T-1.
The pumping alignment circuit 140 includes air exhauster, triode and metal-oxide-semiconductor；The base stage of the triode is connected to master
Chip 110, emitter ground connection are controlled, collector is connected to the grid of metal-oxide-semiconductor, and the source electrode of the metal-oxide-semiconductor is connected to power circuit, leakage
Pole is connected to one end of air exhauster, the other end ground connection of the air exhauster；
The power circuit is connected to main control chip 110, SF6 infrared sensor 120, air flow rate sensor 130, pumping
Alignment circuit 140, warning circuit 150 and communicating circuit 160.By power circuit to main control chip 110, SF6 infrared sensor
120, air flow rate sensor 130, pumping alignment circuit 140, warning circuit 150 and communicating circuit 160 provide stable power supply.
The principle strong to infrared absorbance using SF6 gas of SF6 infrared sensor 120, realizes and examines to SF6 gas content
It surveys, air flow rate sensor 130 measure to the gas flow rate for flowing to SF6 infrared sensor 120, main control chip 110
Outside air is pumped into gas circuit by air exhauster, and be transmitted to SF6 infrared sensor 120, when SF6 infrared sensor 120
When being monitored to the leakage of SF6 gas, main control chip 110 is controlled air exhauster and is evacuated with faster speed, so that gas
It is transmitted to SF6 infrared sensor 120 with faster flow velocity, enables SF6 infrared sensor 120 quickly to the SF6 gas in gas
It is responded, when SF6 infrared sensor 120 detects SF6 leakage, main control chip 110 is alarmed by warning circuit 150,
Then the gas flow rate that main control chip 110 is measured according to air flow rate sensor 130 passes through the pumping reduction pair of alignment circuit 140
Gas flow rate, and gas flow rate is made to maintain a stable flow velocity, enable SF6 sensor measurement to obtain SF6 in gas
The exact value of gas content.Wherein, when SF6 infrared sensor 120 detects the leakage of SF6 gas, the control pumping of main control chip 110
140 fast pump of alignment circuit for a period of time after, after 30S, then carry out reduction gas flow rate, gas flow rate made to maintain one
Stable flow velocity.It, will when main control chip 110 obtains the accurately content of SF6 gas by the measurement of SF6 infrared sensor 120
The content for measuring obtained SF6 gas is sent to terminal by telecommunication circuit and shows, such as computer equipment, cell phone apparatus,
In, communicating circuit 160 can be realized using wireless communication module or wire communication module.
Referring to Fig. 7, in the present embodiment, warning circuit 150 is alarmed using light, warning circuit 150 is LED light.
When main control chip 110 detects the leakage of SF6 gas by SF6 infrared sensor 120, alarmed by LED light.Its
In, warning circuit 150 can also be alarmed using optoacoustic, i.e., warning circuit 150 includes LED light, while including buzzer, be led to
It crosses LED light and buzzer realizes optoacoustic alarm, staff is enable to handle in time the leakage of SF6 gas.
Referring to Fig. 8, in the present embodiment, communicating circuit 160 send out SF6 gas content using wired communication mode
It send to terminal, the communicating circuit 160 includes single supply electrical level transferring chip and RS-232 serial ports, and the RS-232 serial ports passes through
Single supply electrical level transferring chip is connected to main control chip 110.Main control chip 110 is exported by single supply electrical level transferring chip
Signal level carries out after being converted into meeting the signal level of rs-232 standard, terminal is connected by RS-232 serial ports, by SF6 gas
Content be sent to terminal and show.
It should be noted that being not intended to limit although the various embodiments described above have been described herein
The scope of patent protection of the utility model.Therefore, based on the innovative idea of the utility model, embodiment described herein is carried out
Change and modification or equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, directly
Or above technical scheme is used in other related technical areas indirectly, it is included in the protection model of the utility model patent
Within enclosing.
Claims (4)
1. a kind of infrared SF6 on-line monitoring system that automatic flow velocity is adjusted, which is characterized in that including main control chip, the infrared biography of SF6
Sensor, air flow rate sensor, pumping alignment circuit, warning circuit, communicating circuit and power circuit；
The SF6 infrared sensor, air flow rate sensor, warning circuit and communicating circuit are connected to main control chip；
The pumping alignment circuit includes air exhauster, triode and metal-oxide-semiconductor；The base stage of the triode is connected to main control chip,
Emitter ground connection, collector are connected to the grid of metal-oxide-semiconductor, and the source electrode of the metal-oxide-semiconductor is connected to power circuit, and drain electrode is connected to pumping
One end of mechanism of qi, the other end ground connection of the air exhauster；
The power circuit is connected to main control chip, SF6 infrared sensor, air flow rate sensor, pumping alignment circuit, alarm
Circuit and communicating circuit.
2. the infrared SF6 on-line monitoring system that automatic flow velocity is adjusted according to claim 1, which is characterized in that the alarm
Circuit is LED light.
3. the infrared SF6 on-line monitoring system that automatic flow velocity is adjusted according to claim 1, which is characterized in that the communication
Circuit includes single supply electrical level transferring chip and RS-232 serial ports, and the RS-232 serial ports is connected by single supply electrical level transferring chip
It is connected to main control chip.
4. the infrared SF6 on-line monitoring system that automatic flow velocity is adjusted according to claim 1, which is characterized in that the master control
Chip is single-chip microcontroller PIC16F877A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920453592.0U CN209673638U (en) | 2019-04-04 | 2019-04-04 | A kind of infrared SF6 on-line monitoring system that automatic flow velocity is adjusted |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920453592.0U CN209673638U (en) | 2019-04-04 | 2019-04-04 | A kind of infrared SF6 on-line monitoring system that automatic flow velocity is adjusted |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209673638U true CN209673638U (en) | 2019-11-22 |
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ID=68573673
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920453592.0U Active CN209673638U (en) | 2019-04-04 | 2019-04-04 | A kind of infrared SF6 on-line monitoring system that automatic flow velocity is adjusted |
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| Country | Link |
|---|---|
| CN (1) | CN209673638U (en) |
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2019
- 2019-04-04 CN CN201920453592.0U patent/CN209673638U/en active Active
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