CN201149656Y - Sulfur hexafluoride air and apparatus for monitoring derived air - Google Patents
Sulfur hexafluoride air and apparatus for monitoring derived air Download PDFInfo
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- CN201149656Y CN201149656Y CNU2007200091538U CN200720009153U CN201149656Y CN 201149656 Y CN201149656 Y CN 201149656Y CN U2007200091538 U CNU2007200091538 U CN U2007200091538U CN 200720009153 U CN200720009153 U CN 200720009153U CN 201149656 Y CN201149656 Y CN 201149656Y
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- sulfur hexafluoride
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- hexafluoride gas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model relates to a device for monitoring and supervising sulfur hexafluoride gas and the derivative gases thereof. The device comprises a position machine, a blower, an alarm, a system host, and a plurality of transducers connected with the system host. The transducers are respectively connected with the host through a CAN bus, and the host is also connected with the position machine, and the blower and the alarm which are linked. The device is provided with a double-route double-test monitoring circuit to detect the concentration of sulfur hexafluoride gas and the derivative gases thereof, thus greatly improving reliability. Various transducers can be connected to the device, so the device is of separate supervising capability to a plurality of areas and can realize linked control to a plurality of targets like a scavenging blower, a cooling blower, etc. The device is also capable of recording data and can record the movements of the alarming targets and the control targets and store the records, and the records will not lose even in the case of power failure; the device can be arranged to be in abutting joint with the monitoring software in a transformer substation by being fit with a corresponding communication software, so as to realize remote communication, remote detection and remote control. Meanwhile the device is light in weight and is convenient to install, use and maintain; therefore the device is an ideal device for monitoring and supervising the content of sulfur hexafluoride gas and the derivative gases thereof.
Description
One, technical field
The utility model belongs to industrial sulfur hexafluoride gas monitoring field, refers more particularly to a kind of two devices that detect high-pressure modular constant voltage discharge method to sulfur hexafluoride gas and the gas-monitoring of deriving monitoring thereof of two-way of using.
Two, technical background
Sulfur hexafluoride gas has good arc extinguishing and insulation function, therefore, sulfur hexafluoride gas is widely used in the power equipment, as the sulfur hexafluoride gas primary cut-out, the sulfur hexafluoride gas switchgear, pipeline bus etc. pure sulfur hexafluoride gas is a kind of colourless, tasteless, nontoxic, the halogen compounds of difficult combustion is being lower than under 150 ℃ of situations, and sulfur hexafluoride gas is chemical inertness, but at large power electric arc, under spark and the discharge corona effect, the sulfur hexafluoride gas multiple poisonous and corrosive substance that can decompose and dissociate. therefore, in use sulfur hexafluoride gas power equipment, the leakage of the sulfur hexafluoride gas not only performance of switching devices influences to some extent, main is poisonous analyte is to the harm of human body with to the havoc of environment. for above-mentioned reasons, the sulfur hexafluoride gas power equipment is carried out strict monitoring and protection, to ensure manpower, it is particularly important that equipment, environmentAL safety just seem.
In the patent No. be: ZL200520069082.1, publication number: CN2773672, name is called: the optical detection apparatus of sulfur hexafluoride gas concentration, the optical detection apparatus of this sulfur hexafluoride gas concentration has light emitting devices, light path device, gas channels selector switch, inlet channel, outlet passageway and gas input passage to be measured; The inside of light path device has narrowband light filter, power attenuator, optical splitter, printing opacity device, air intake opening, gas outlet and reference light outlet; The light place straight line that the light transmitting terminal of light emitting devices is launched and the axial line of light path device are on same straight line; Gas input passage is surveyed in the gas input passage input end reception to be measured of gas channels selector switch, and the gas input passage output terminal to be measured of gas channels selector switch taps into gas port through inlet channel; The gas outlet picks out the gas passage and links to each other with the external world.Adopt the infrared light optical devices that sulfur hexafluoride gas concentration is measured, have that measurement range is wide, highly sensitive, precision is high, response speed is fast, good selectivity is arranged, distinct advantages such as can analyze continuously.But this apparatus structure is too complicated, and can only be specific to sulfur hexafluoride gas by this optical detection apparatus, and can not detect simultaneously other gas of deriving that is harmful to of sulfur hexafluoride gas simultaneously.
Two, the utility model content
The purpose of this utility model is to overcome above-mentioned weak point of the prior art and provides a kind of two high-pressure modular constant voltage discharge methods that detect of two-way of using to measure device sulfur hexafluoride gas and that derive the gas content monitoring by discharge current.
The utility model is realized in the following way: mainly be made up of host computer, blower fan, warning device, system host and a plurality of transmitters of being attached thereto; Each transmitter links to each other with main frame respectively by the CAN bus, main frame also respectively with host computer, and the blower fan that links link to each other with warning device.
When sulfur hexafluoride gas leaks, gas is because of walking downwards than great, being installed in the ground transmitter sensing collector causes by discharge current and changes by gathering sulfur hexafluoride gas, the corresponding sulfur hexafluoride gas of analytical calculation and the gas concentration of deriving thereof, and by system's setting, make at setting range and report to the police and air-exhausting function, realize protection the person and device security.The operation of high pressure constant voltage module 1 and high pressure constant voltage module 2 being installed respectively in the transmitter and controlling by transmitter mainboard CPU, carry out effluve in real time, when sulfur hexafluoride gas and the gas of deriving thereof near becoming the variation that causes electric current when sending collector, sulfur hexafluoride gas is caused to be changed by discharge current the sensing collector by gathering in the transmitter, be sent to main frame through Signal Pretreatment A/D conversion, host CPU is analyzed receiving data, the rejecting abnormalities data are also enabled another road comparison transmitter sample acquisitions and are detected, after host analysis calculates correction, analytical calculation draws the corresponding accurate sulfur hexafluoride gas and the gas concentration of deriving thereof, data presentation is on liquid crystal display, and by system's setting, data are reported to the police when setting range transfinites and air-exhausting function, realize protection the person and device security.
In sum, the utility model is for improving the stability and the reliability of the monitoring of the sulfur hexafluoride gas and the gas concentration of deriving thereof, the utility model has designed the two comparison sulfur hexafluoride gas and the gas concentration observation circuits of deriving thereof of detecting of two-way, when the Monitoring Data of the main sulfur hexafluoride gas and the gas concentration observation circuit of deriving thereof is had a question, automatically the sulfur hexafluoride gas and the gas concentration observation circuit of deriving thereof that starts comparison compared, and improved reliability greatly.Can connect multiple transmitter, the independent monitoring capacity in a plurality of zones of tool, and can realize interlock control as ventilation blower fan, temperature-dropping fan etc. to a plurality of objects; And have data recording function, recorded and stored is carried out in the action of warning of name kind and controlling object, record has a power failure and does not lose; Can dock with supervisory control of substation software by connecting corresponding bitcom, realize remote signalling, remote measurement, the telemetry function of system; Characteristics such as it is light and handy that while the utility model also has structure, and installation and working service are convenient are a kind of desirable devices novel sulfur hexafluoride gas and that derive the gas content monitoring.
Four, description of drawings
Fig. 1 construction module synoptic diagram of the present utility model;
Fig. 2 the utility model host hardware system architecture module diagram;
The hardware system structure module diagram of Fig. 3 the utility model transmitter;
Five, the utility model specific embodiment
The utility model embodiment now is described in detail in detail in conjunction with the accompanying drawings:
As shown in Figure 1, the utility model mainly is made up of host computer 12, blower fan 13, warning device 14, system host 11 and a plurality of transmitters 15 of being attached thereto; Each transmitter 15 links to each other with system host 11 respectively by the CAN bus, system host 11 also respectively with host computer 12, and the blower fan 13 of interlock with report warning device 14 to link to each other.
As shown in Figure 2, the utility model system host 11 mainly comprises cabinet, LCD interface circuit 27, touch-screen display 22, mainboard CPU21, the drive unit 28,29 that calendar clock device 23, voice device 24, nonvolatile memory 25, A/M are provided with switch 30 and output driving circuit 31, host power supply 26 and link to each other with alarm 14 with blower fan 13 respectively.
Wherein:
1, the CPU of mainboard CPU21 employing is LPC2292, is the embedded type CPU of the ARM7 series of NXP company production, and LPC2292 adopts the crystal oscillator of 12MHZ, generates the 60MHZ clock signal through PLL circuit 5 frequencys multiplication and uses for total system.The address space of LPC2292 is divided into built-in and outside two parts, and the pin of LPC2292 is divided into P0, P1, four parts of P2, P3.
2, the LCD interface circuit 27
The utility model adopts intelligent LCD display, and main frame uses parallel interface that it is controlled.For improving transmission speed, the data division of this parallel interface directly is connected with the data bus of system.
3, nonvolatile memory 25
The utility model adopts the 62WV5128 static memory that has backup battery as nonvolatile memory, the historical record data of saved system, and this storer has the capacity of 512K byte, can preserve a large amount of historical record data.For guaranteeing transmission speed, the data of this static memory all directly are connected with system bus with address interface.
4, the calendar clock device circuit 23
The utility model adopts the M41T0 calendar clock circuit of ST company, with the shared backup battery of static memory 62WV5128, is connected with LPC2292.
5, the voice device circuit 24
The utility model adopts ISD1420 to be storage and playback circuit, and LM386 is a power amplifier.
6, A/M is provided with switch 30 and output driving circuit 31
The utility model is provided with the state of switch by GPIO input A/M; Then by GPIO output control signal, pilot relay is exported after MC1413 amplifies in output.
7, power circuit 26
The utility model adopts 12V direct current supply, divides 2 the tunnel to supply the work of main frame each several part:
1.. the Switching Power Supply output 5V voltage that adopts MC34063 to form, for interface circuit work, again through LDO voltage stabilizer output 3.3V and 1.8V voltage, for cpu interface circuit and kernel work
2. the .12V DC voltage is for LCD display, voice amplifying circuit and power output circuit
Shown in figure three, the utility model transmitter mainly includes cabinet, pick-up transducers, data mainboard CPU31, high-pressure modular 32, conditioning circuit module 33, A/D load module 34.Described pick-up transducers includes: sulfur hexafluoride gas and the gas sensor 35 of deriving, humidity sensor 36, oxygen quantity sensor 37, H2S sensor 38, SO2 sensor 39 and temperature sensor 40; That wherein data mainboard CPU31 adopts is LPC2119, is the embedded type CPU of the ARM7 series of NXP company production, and LPC2119 adopts the crystal oscillator of 12MHZ, generates the 60MHZ clock signal through PLL circuit 5 frequencys multiplication and uses for total system.Temperature sensor 40 directly links to each other with mainboard CPU 31, and the sulfur hexafluoride gas and the gas sensor 35 of deriving thereof, humidity sensor 36, oxygen quantity sensor 37, H2S sensor 38, SO2 sensor 39 all link to each other with mainboard CPU 31 through A/D load module 34 by conditioning circuit module 33; High-pressure modular is divided into high-pressure modular one and high-pressure modular two, is controlled the operation of high-pressure modular one and high-pressure modular two respectively and is linked to each other with the sulfur hexafluoride gas and the gas sensor 35 of deriving thereof by mainboard CPU31.
1.A/D interface circuit
The utility model adopts 10 A/D analog to digital converters of LPC2119 because LPC2119 only has 4 road A/D converters, so system extension 1 CD4501 analog switching circuit.
2. sulfur hexafluoride gas testing circuit
The sulfur hexafluoride gas observation circuit adopts high-pressure modular constant voltage discharge method, measures the content of sulfur hexafluoride gas by discharge current.For improving the stability and the reliability of sulfur hexafluoride gas monitoring, adopted following 2 to improve one's methods:
1.. increase standby sulfur hexafluoride gas observation circuit, the Monitoring Data of main sulfur hexafluoride gas observation circuit when with suspicion, started standby sulfur hexafluoride gas observation circuit automatically and compares, improved reliability;
2.. the high-pressure modular constant voltage discharge to the sulfur hexafluoride gas observation circuit carries out energy limited, reduces the consumption of sensor.
Control the operation of high-pressure modular 1 and high-pressure modular 2 respectively by LPC2119.Because the circuit structure of high-pressure modular, the output voltage of sulfur hexafluoride gas observation circuit and habituation require different, adopt the method for software computing to solve.3. oxygen amount, humidity, H2S and SO2 testing circuit
The output of oxygen amount, humidity, H2S and SO2 sensor is analog signals, and the conditioning back is imported by A/D converter.H2S and SO2 sensor are output as little current signal, and the design has adopted the modulate circuit of sensor manufacturer suggestion.
4. temperature sensing circuit
Temperature sensing circuit has adopted the temperature sensor of DS18B20 digital interface, directly controls and read detected value by GPIO, and precision is higher but detection speed is slower.
5. power circuit
The utility model adopts 24V direct current supply, divides 2 the tunnel to supply the work of transmitter each several part:
1.. the Switching Power Supply output 5V voltage that adopts MC34063 to form, for interface circuit work, again through LDO voltage stabilizer output 3.3V and 1.8V voltage, for cpu interface circuit and kernel work
2.. adopt MC7812 voltage stabilizing output 12V voltage, use for the sulfur hexafluoride gas high-voltage power supply.
Host-host protocol between the utility model main frame and the transmitter
The utility model system host-transmitter transmission is based on the CAN2.0B agreement, and for taking into account transmission speed and distance, the baud rate of selecting for use is 50Kbps, and transmission range can reach 1200 meters, and master-slave mode is adopted in transmission.
The communication protocol of the utility model host computer and system host
Host computer 12 adopts standard RS-232 or RS-485 communication standard with communicating by letter of system host 11, and baud rate is 9600, adopts 11 forms that the band odd is arranged.Host-host protocol adopts master-slave mode, and host computer is as main control end, system host as Partner hereinafter to be referred as, all operations says the word by host computer, system host is as wait-for-response.
The sulfur hexafluoride gas observation circuit adopts high-pressure modular constant voltage discharge method, high pressure constant voltage module one and high pressure constant voltage module two are installed respectively in the transmitter and control operation by transmitter mainboard CPU31, carry out effluve in real time, when sulfur hexafluoride gas and the gas of deriving thereof near becoming the variation that causes the magnitude of current when sending collector, sulfur hexafluoride gas is caused to be changed by discharge current the sensing collector by gathering in the transmitter 15, be sent to system host 11 through Signal Pretreatment A/D conversion, measure the content of sulfur hexafluoride gas by discharge current.For improving the stability and the reliability of sulfur hexafluoride gas monitoring, increased standby sulfur hexafluoride gas observation circuit, the Monitoring Data of main sulfur hexafluoride gas observation circuit when with suspicion, started standby sulfur hexafluoride gas observation circuit automatically and compares, improved reliability.Active and standby sulfur hexafluoride gas observation circuit changing method is as follows:
1.. after the system start-up, at first use main sulfur hexafluoride gas observation circuit;
2.. when main sulfur hexafluoride gas observation circuit is exported less than 1.25V, attempt standby sulfur hexafluoride gas observation circuit;
3.. greater than 1. 25V, switch to standby sulfur hexafluoride gas observation circuit as standby sulfur hexafluoride gas observation circuit output;
4.. after using standby observation circuit 16 times, attempt main sulfur hexafluoride gas observation circuit, as recover normal, then switch back main sulfur hexafluoride gas observation circuit.
When sulfur hexafluoride gas leaks, gas is because of walking downwards than great, being installed in the ground transmitter sensing collector causes by discharge current and changes by gathering sulfur hexafluoride gas, the corresponding sulfur hexafluoride gas of analytical calculation and the gas concentration of deriving thereof, and by system's setting, make at setting range and report to the police and air-exhausting function, realize protection the person and device security.The operation of high pressure constant voltage module one and high pressure constant voltage module two being installed respectively in the utility model transmitter and controlling by transmitter mainboard CPU31, carry out effluve in real time, when sulfur hexafluoride gas and the gas of deriving thereof near becoming the variation that causes electric current when sending collector, sulfur hexafluoride gas is caused to be changed by discharge current the sensing collector by gathering in the transmitter, be sent to system host 11 through Signal Pretreatment A/D conversion, 21 pairs of host CPUs receive data and analyze, the rejecting abnormalities data are also enabled another road comparison transmitter sample acquisitions and are detected, after host analysis calculates correction, analytical calculation draws the corresponding accurate sulfur hexafluoride gas and the gas concentration of deriving thereof, data presentation is on liquid crystal display, and by system's setting, data are reported to the police when setting range transfinites and air-exhausting function, realize protection the person and device security.Because the circuit structure of high pressure constant voltage module, the output voltage of sulfur hexafluoride gas observation circuit and habituation require different, adopt the method for software computing to solve.Before measuring, must be earlier in the laboratory to the high-pressure modular constant voltage discharge magnitude of current corresponding influence variation with the sulfur hexafluoride gas and the gas concentration of deriving thereof measure, by measuring corresponding curve table, utilize computer-aided analysis to calculate, can obtain the corresponding data situation, this data cases is measured corresponding equivalent as host CPU, calculates sulfur hexafluoride gas and derives the gas concentration data by discharge current.
Claims (3)
1. the device of the sulfur hexafluoride gas and the gas-monitoring of deriving thereof monitoring is characterized in that: mainly be made up of host computer (12), blower fan (13), warning device (14), system host (11) and a plurality of transmitters (15) of being attached thereto; Each transmitter (15) links to each other with system host (11) respectively by the CAN bus, system host (11) also respectively with host computer (12), and the blower fan (13) that links link to each other with warning device (14).
2. the device of a kind of sulfur hexafluoride gas according to claim 1 and the gas-monitoring of deriving monitoring thereof, it is characterized in that: described system host (11) mainly comprises cabinet, LCD interface circuit (27), touch-screen display (22), mainboard CPU (21), drive unit (28), (29) that calendar clock device (23), voice device (24), nonvolatile memory (25), A/M are provided with switch (30) and output driving circuit (31), host power supply (26) and link to each other with warning device (14) with blower fan (13) respectively.
3. the device of a kind of sulfur hexafluoride gas according to claim 2 and the gas-monitoring of deriving monitoring thereof, it is characterized in that: described transmitter (15) mainly includes cabinet, pick-up transducers, data mainboard CPU LPC2119 (31), high-pressure modular (32), conditioning circuit module (33), A/D load module (34); Described pick-up transducers includes: sulfur hexafluoride gas and the gas sensor of deriving (35) thereof, humidity sensor (36), oxygen quantity sensor (37), H2S sensor (38), SO2 sensor (39) and temperature sensor (40); Temperature sensor (40) directly links to each other with mainboard CPU LPC2119 (31), and sulfur hexafluoride gas and the gas sensor of deriving (35) thereof, humidity sensor (36), oxygen quantity sensor (37), H2S sensor (38), SO2 sensor (39) all link to each other with mainboard CPU LPC2119 (31) through A/D load module (34) by conditioning circuit module (33); High-pressure modular (32) is divided into high-pressure modular one and high-pressure modular two, is controlled the operation of high-pressure modular one and high-pressure modular two respectively and is linked to each other with sulfur hexafluoride gas and the gas sensor of deriving (35) thereof by mainboard CPULPC2119 (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200091538U CN201149656Y (en) | 2007-12-20 | 2007-12-20 | Sulfur hexafluoride air and apparatus for monitoring derived air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200091538U CN201149656Y (en) | 2007-12-20 | 2007-12-20 | Sulfur hexafluoride air and apparatus for monitoring derived air |
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| CN201149656Y true CN201149656Y (en) | 2008-11-12 |
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| CNU2007200091538U Expired - Fee Related CN201149656Y (en) | 2007-12-20 | 2007-12-20 | Sulfur hexafluoride air and apparatus for monitoring derived air |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102142181A (en) * | 2011-03-02 | 2011-08-03 | 安徽泓瑞医用设备工程有限公司 | Medical gas warning system |
| CN101464671B (en) * | 2007-12-20 | 2012-07-11 | 郑召兴 | Apparatus and method for monitoring sulfur hexafluoride gas and its derived gas |
-
2007
- 2007-12-20 CN CNU2007200091538U patent/CN201149656Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101464671B (en) * | 2007-12-20 | 2012-07-11 | 郑召兴 | Apparatus and method for monitoring sulfur hexafluoride gas and its derived gas |
| CN102142181A (en) * | 2011-03-02 | 2011-08-03 | 安徽泓瑞医用设备工程有限公司 | Medical gas warning system |
| CN102142181B (en) * | 2011-03-02 | 2016-10-12 | 安徽泓瑞医用设备工程有限公司 | Medical gas warning system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: FUJIAN MEGO ELECTRIC POWER TECHNOLOGY CO., LTD. Assignor: Zheng Zhaoxing Contract record no.: 2010350000154 Denomination of utility model: Apparatus and method for monitoring sulfur hexafluoride gas and its derived gas Granted publication date: 20081112 License type: Exclusive License Record date: 20100712 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081112 Termination date: 20141220 |
|
| EXPY | Termination of patent right or utility model |