CN109342751A - A kind of sulfur hexafluoride Condition Detection nigration system - Google Patents
A kind of sulfur hexafluoride Condition Detection nigration system Download PDFInfo
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- CN109342751A CN109342751A CN201811426096.2A CN201811426096A CN109342751A CN 109342751 A CN109342751 A CN 109342751A CN 201811426096 A CN201811426096 A CN 201811426096A CN 109342751 A CN109342751 A CN 109342751A
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/00584—Control arrangements for automatic analysers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The invention discloses a kind of sulfur hexafluoride Condition Detection nigration systems, it includes: chromatograph, industrial personal computer, automatic control system PLC and detection instrument pipe-line system；Chromatograph, automatic control system PLC and detection instrument pipe-line system are connect with industrial personal computer；Automatic control system PLC includes gas circuit selection solenoid valve, mass flowmenter, vacuum pump and exhaust system；Gas circuit selection solenoid valve, mass flowmenter, vacuum pump and exhaust system are connect with industrial personal computer；Detecting instrument pipe-line system includes temperature and humidity measuring instrument, decomposition product measuring instrument, purity determination instrument and test tube detection module；Decomposition product measuring instrument is connect with industrial personal computer and purity determination instrument respectively；Purity determination instrument is also connect with temperature and humidity measuring instrument；Temperature and humidity measuring instrument is also connect with test tube detection module；Test tube detection module is also connect with industrial personal computer.The present invention can flexibly realize field device SF6Gas correlation Data Detection.
Description
Technical field
The present invention relates to sulfur hexafluoride technical field, especially a kind of sulfur hexafluoride Condition Detection nigration system
System.
Background technique
Sulfur hexafluoride gas decomposition product is easy to be done by external environment during sampling due to its unstability
It disturbs, laboratory test results is caused to have differences with actual conditions, while live sulfur hexafluoride decomposition product detectability at present
It is limited, the property and degree of device interior failure can not be accurately determined, therefore, it is necessary to develop sulfur hexafluoride Condition Detection
Nigration system, with sulfur hexafluoride decomposition product full constituent analysis ability.
Summary of the invention
In view of the above drawbacks of the prior art, it is an object of the invention to provide a kind of sulfur hexafluoride Condition Detections
Nigration system can flexibly realize field device SF6Gas correlation Data Detection.
It is realized the purpose of the present invention is technical solution in this way, a kind of mobile examination of sulfur hexafluoride Condition Detection
Check system, it includes: chromatograph, industrial personal computer, automatic control system PLC and detection instrument pipe-line system；
The chromatograph, automatic control system PLC and detection instrument pipe-line system are connect with the industrial personal computer；
The automatic control system PLC includes gas circuit selection solenoid valve, mass flowmenter, vacuum pump and exhaust system
System；The gas circuit selection solenoid valve, mass flowmenter, vacuum pump and exhaust system are connect with industrial personal computer；
The detection instrument pipe-line system includes temperature and humidity measuring instrument, decomposition product measuring instrument, purity determination instrument and test tube
Detection module；The decomposition product measuring instrument is connect with the industrial personal computer and purity determination instrument respectively；The purity determination instrument also with
The temperature and humidity measuring instrument connection；The temperature and humidity measuring instrument is also connect with the test tube detection module；The test tube detects mould
Block is also connect with the industrial personal computer.
Further, the pilot system further includes having three-way magnetic valve, the three-way magnetic valve by intermediate relay with
The automatic control system PLC connection；The three-way magnetic valve is also connect with test tube detection module.
Further, the pilot system further includes having mass flowmenter, and the mass flowmenter is by the port AD and automatically
Networked control systems PLC connection for flow signal to be uploaded to industrial personal computer by the port AD of PLC, and receives automation simultaneously
The control signal that control system PLC is exported by the port DA.
Further, the pilot system further includes having vacuum feedback module, the vacuum feedback module by the port AD with
Automatic control system PLC connection, for vacuum feedback signal to be uploaded to industrial personal computer by the port AD of PLC；And it connects simultaneously
Receive the control signal that automatic control system PLC is exported by the port DA.
Further, the chromatograph is 7890 chromatograph of Agilent, and the temperature and humidity measuring instrument is 601FD, the decomposition
Object measuring instrument is 601FA, and the purity determination instrument is 500FP.
Further, the industrial personal computer is also connect with external power supply, and the external power supply is alternating current 220V or generator power supply.
By adopting the above-described technical solution, the present invention has the advantage that:
(1) embedded job control computer is used, by data all concentrated collections to this computer of entire detection vehicle,
Carry out data storage, analysis, printing etc..And there are network interfaces, are convenient for data remote；
(2) field device SF can be flexibly realized6Gas correlation Data Detection；
(3) it is connected by the pipeline that valve controls different instrument, realizes the collection in worksite analysis of different data；
(4) by upper computer software, the data monitoring analysis and storage of centralization are realized；
(5) it is realized by corresponding circuit design and instrument to live SF6The corresponding parameter measurement of gas, passes through simultaneously
The data of measurement are uploaded to host computer and carry out real-time data by 485 buses to be shown and storage.Automatic control system is for automatic
The operation of the corresponding detection gas circuit and ancillary equipment of control.It is whole that whole system only needs operator's control host computer can be achieved with
Detect work, while gas parameter detection instrument can be convenient from installation shell unload be independently operated, realization concentrate inspection
Survey the combination with independent detection.
Other advantages, target and feature of the invention will be illustrated in the following description to a certain extent, and
And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the present invention.
Detailed description of the invention
Detailed description of the invention of the invention is as follows:
Fig. 1 is the connection block diagram of sulfur hexafluoride Condition Detection nigration system.
Fig. 2 is the pipeline structure schematic diagram of sulfur hexafluoride Condition Detection nigration system.
Fig. 3 is the electrical design block diagram of sulfur hexafluoride Condition Detection nigration system.
Fig. 4 is that meter communication is electrically connected schematic diagram.
Fig. 5 is sulfur hexafluoride Condition Detection nigration system power supply and controlled device circuit diagram.
Fig. 6 is mass flowmenter control flow schematic diagram.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
Embodiment, as shown in Figures 1 to 6；A kind of sulfur hexafluoride Condition Detection nigration system, it includes:
Chromatograph, industrial personal computer, automatic control system PLC and detection instrument pipe-line system；
Chromatograph, automatic control system PLC and detection instrument pipe-line system are connect with industrial personal computer；
Automatic control system PLC includes gas circuit selection solenoid valve, mass flowmenter, vacuum pump and exhaust system；Gas
Road selection solenoid valve, mass flowmenter, vacuum pump and exhaust system are connect with industrial personal computer；
Detection instrument pipe-line system includes temperature and humidity measuring instrument, decomposition product measuring instrument, purity determination instrument and test tube detection
Module；Decomposition product measuring instrument is connect with industrial personal computer and purity determination instrument respectively；Purity determination instrument is also connect with temperature and humidity measuring instrument；
Temperature and humidity measuring instrument is also connect with test tube detection module；Test tube detection module is also connect with industrial personal computer.
Pilot system further includes having three-way magnetic valve, and three-way magnetic valve passes through intermediate relay and automatic control system
PLC connection；Three-way magnetic valve is also connect with test tube detection module.
Pilot system further includes having mass flowmenter, and mass flowmenter is connected by the port AD and automatic control system PLC
It connects, for flow signal to be uploaded to industrial personal computer by the port AD of PLC, and receives automatic control system PLC simultaneously and pass through
The control signal of the port DA output.
Pilot system further includes having vacuum feedback module, and vacuum feedback module passes through the port AD and automatic control system
PLC connection, for vacuum feedback signal to be uploaded to industrial personal computer by the port AD of PLC；And automation control system is received simultaneously
The control signal that system PLC is exported by the port DA.
Chromatograph is 7890 chromatograph of Agilent, and temperature and humidity measuring instrument 601FD, decomposition product measuring instrument is 601FA, purity
Measuring instrument is 500FP.
Industrial personal computer is also connect with external power supply, and external power supply is alternating current 220V or generator power supply.
System mainly consists of two parts: detection instrument and corresponding pipe-line system and automatic control system are constituted.Instrument
Table and corresponding pipe-line system are the cores of whole system, are realized by corresponding circuit design and instrument to live SF6Gas
Corresponding parameter measurement, while the data of measurement are uploaded to the real-time data of host computer progress by 485 buses and shows and deposits
Storage.Automatic control system is used to automatically control the operation of corresponding detection gas circuit and ancillary equipment.Whole system only needs operator
Control host computer can be achieved with whole detection work, while unloading from installation shell of can be convenient of gas parameter detection instrument
It carries out being independently operated, the combination for realizing centralized detecting and independent detection.
Since system is measurement SF6Gas, and different instrument requires difference to pressure flow of air inlet and outlet etc., is
The each instrument of guarantee can be independent of each other, and guarantee measurement accuracy, need to carry out whole system pipeline careful design, thus
Guarantee the realization of various functions.The circuit design of whole system is as shown in Figure 2.
It designs below with reference to system pipeline, each gas circuit is analyzed respectively.
(1) vacuumize gas circuit design: the gas circuit is mainly made of hand-operated valve and vacuum pump, and main function is to from equipment
Vacuum pumping is carried out to the pipeline between air inlet, emptying time is reduced when to guaranteeing systematic survey, so that instrument is as early as possible
Into measuring state to reduce capacity.Interface will be vacuumized to be placed on before manual main valve, closed in vacuum pumping
Manual main valve, damages instrumentation when preventing from vacuumizing.Indwelling spare interface, confession are external at vacuum pump main-inlet simultaneously
Steel cylinder device vacuumizes, and closes the valve when not used.
(2) instrument measurement gas circuit design: temperature and humidity, decomposition product and purity determination instrument be respectively adopted 601FD, 601FA and
500FP increases stainless steel control valve for gas circuit when design, guarantees that equipment works under optimal operating condition, thus into one
Step guarantees the precision of measurement.
(3) chromatograph gas circuit designs: since 7890 chromatograph of Agilent has the function of internal pressure-stabilizing constant flow, need to only pacify for it
The additional manually-operated gate of gas circuit is set to control gas circuit.
(4) test tube method measurement gas circuit design: the requirement according to test tube to gas circuit is in its prime installation quality flow valve and three
Three-way electromagnetic valve accurately controls air inflow by mass flow valve while passing through the external gas exhaust piping all the way of triple valve, gas exhaust piping
It is mainly used for system and carries out test tube measurement initial stage discharge line gas, guarantees the accuracy of measurement.
(5) each instrumentation gas outlet is all used with escape pipe at the pipe design at 45 degree of inclination angles, to prevent gas
Reflux guarantees measurement accuracy.Gas treatment equipment is installed additional in gas outlet simultaneously, toxic gas is absorbed and filter, and protects person peace
Entirely, the pollution to environment is reduced.
Whole system use external power supply (live AC220V or generator) power supply mode, according to scene different situations into
Row selection.Automatic system control has host computer configuration software and PLC and its expanded circuit co- controlling to complete, and host computer is according to behaviour
The work of input order control the test tube flow and vacuum pump of work person, while real-time monitoring meter operation data and showing automatically.
Whole system electrical design is by as shown in Figure 3.The master control part of whole system is on industrial personal computer host computer configuration software, instrument portion
Divide and the control section PLC passes through 485 agreements and industrial personal computer connection communication respectively, the real-time measuring data of data meter continuously uploads
It is shown to configuration, while digital output port control is passed through by input command adapted thereto control PLC and its expanded circuit work, PLC
Intermediate relay processed exports control signal to mass flow to control vacuum pump and three-way magnetic valve movement, by the port DA
Meter, controls the output flow of mass flowmenter；Flow and vacuum degree feedback signal are uploaded by the port AD of PLC.
The Electronic mass flow meter that this system uses is to aim to use SF6Gas and optimization design.Using hot type principle, with
Capillary sampling mode measures mass flow, without temperature, pressure and square root amendment, specially BESTACE mass flow
Meter.
Electronic flow control module forms closed loop feedback system by flow sensor and flow control valve, from electronic flowmeter
It is transmitted through the flow signal come and carries out operation by the flow value of amplification operation and setting, if the feedback of flow sensor is not achieved
Setting value, then corresponding adjust automatically control valve, to guarantee stability of flow in setting value.The control of DSN serial gas mass flow
Device, i.e. title Mass Flow Controller (being abbreviated as MFC), not only have the function of mass flowmenter, it is often more important that, it
Gas flow can be automatically controlled, flow set can be carried out as needed, MFC is automatically constant in setting value by flow, even if
System pressure has fluctuation or environment temperature to change, and will not cause a deviation from setting value.Briefly, mass flow controller is just
It is a constant-current stabilizer, the gas constant-current stabilizer automatically controlled can be manually set or couple with computer by being one.
The present invention chooses Switzerland's prestige section RL -8 type vacuum pump, and 220VAC power supply is peculiar to prevent back flow of gas, and machine oil is lost
Design.Especially big oiling valve port is designed, oiling is facilitated.Peculiar design reduces pump operation impact endurance test shock.It is easy to protect in design aspect
It supports and repairs.Design has insulation crust protection, guarantees that work is safer.Make to be fixedly secured instrument with carrying easy to disassemble
With main cabinet body part all uses sheet metal part to make, and instrument installation is fixed to use movable connection.Metal metal sheet is adopted
It is handled with surface plastic spraying, makes sheet metal part that there is good antidetonation, antiseptic property.
Test tube detection gas circuit in the present invention uses U.S. parker two-bit triplet electromagnetic switch Vavle switching, polytetrafluoro material
Ensure that gas circuit is not corroded by SO2, H2S, while preferably avoiding gas absorption, guarantees the accuracy of measurement.
Magnetic valve performance index is as follows:
Material: stainless steel；
Pressure resistance: 100PSIG；
Operating voltage: DC24V；
Operating current: < 500mA.
PLC and its expansion module in the present invention are 200 series of PLC of S7-by microprocessor, integrated power supply and Digital I/O
It is integrated in an encapsulation, main control module CPU is integrated with 24 inputs/16 outputs totally 40 digital quantity I O points, can connect 7 extensions
Module, largest extension to 248 railway digital Liang Huo, 35 tunnel analog quantity.13K byte program and data space.6 independent
30KHZ high-speed counter, the independent 20KHZ high-speed pulse output in 2 tunnels have PID controller.2 RS485 passing need degree mouths,
With PPI communications protocol, MPI communications protocol and free way ability to communicate.It is mainly used in complicated middle-size and small-size control system.
In order to control mass flowmenter and receive feedback signal, extends analog quantity spread module EM235 and analog quantity is provided
Input/output function.Physics points 4 road analog inputs, 1 road analog output can be achieved.PLC main control module performance parameter
As shown in table 1.
1 PLC main control module performance parameter of table
| Model | PORT COM | Communication modes | Power | Operating voltage | I/O quantity | Volume (mm) |
| CPU 226 | 2 RS485 | PPI | 25 watts | DC24V | 24, which enter/16, goes out | 190×80×62 |
Control system capital equipment functional parameter is as shown in table 2 below.
2 control system capital equipment functional parameter of table
This system design uses Modbus agreement.Electric hookup is as shown in Figure 4.Automation control partial electric system
Mainly by power supply and control circuit and PLC main control module.Whole system is supplied using external power supply (live AC220V or generator)
Electric mode.Power supply circuit is as shown in Figure 5.External AC220V powers after coming in industrial personal computer, display, chromatography and Switching Power Supply.
Switching Power Supply generates DC24V and powers to PLC and its expanded circuit.KA1 and KA2 is intermediate relay, can be with by PLC delivery outlet
Automatically control the power supply of vacuum pump and three-way magnetic valve.
The control section PLC design scheme mainly includes vacuum pump, three-way magnetic valve and mass flowmenter control circuit.PLC
The digital output mouth Q0.0 of main control module connects intermediate relay KA1 and KA2 with Q0.1, passes through software control digital delivery outlet
DC24V is exported, to control the on and off of relay.The work of expansion module EM235 control mass flowmenter.Quality stream
Meter DB9 needle interface, each pin function are defined as follows:
1.24VDC power cathode
2. set point signal inputs cathode
3.4-20mA output cathodes
4.0-5VDC output cathodes
5. setting signal input anode
6. empty foot
7.24VDC positive pole
8. output negative pole
9. local set point signal
Wherein, 1 and 7 pins are respectively that power supply is negative and positive pole, meet Switching Power Supply 24VDC；2 and 5 control for flowmeter
0-5V of signal input, it is not corresponding with flowmeter physical signal because EM235 simulation output port V0 exports 0-10V, therefore will control
Signal is connected to EM235IO output pin, exports 0-20mA, is 0-5V by 250 Europe resistance conversions, controls flow；4
It is exported with 8 for 0-5V of flowmeter feedback signal, connects EM235 modules A I0 input terminal, flowmeter work is ensured to flow signal feedback
Make normal.PLC226 and EM235 power supply meets Switching Power Supply 24VDC.
The part control principle is as follows: after measurement capacity and flow velocity is arranged in configuration software interface, system be will automatically calculate
Time of measuring, clicks " measurement of starting test tube " button, and system carries out one point of purging to test tube measurement bypass with maximum stream flow first
Clock excludes last time measurement residual gas.Then start measurement procedure again, reversing solenoid valve is opened, to set time of measuring and stream
Speed measures test tube, and flowmeter and solenoid valve are closed after measurement.Control flow is as shown in Figure 6.Three-way magnetic valve is silent
Recognize purging bypass normal open under state, just powers on solenoid valve when being only switched to measuring state, gas circuit is made to commutate to measurement test tube
Measurement channel.
The present invention uses embedded job control computer, by data all concentrated collections of entire detection vehicle to this computer
On, carry out data storage, analysis, printing etc..And there are network interfaces, are convenient for data remote；It can flexibly realize existing
Field device SF6 gas correlation Data Detection；It is connected by the pipeline that valve controls different instrument, realizes that the scene of different data is adopted
Set analysis；By upper computer software, the data monitoring analysis and storage of centralization are realized；Pass through corresponding circuit design and instrument
It realizes to the live corresponding parameter measurement of SF6 gas, while the data of measurement is uploaded to host computer by 485 buses and are carried out in fact
When data show and store.Automatic control system is used to automatically control the operation of corresponding detection gas circuit and ancillary equipment.It is whole
A system, which only needs operator to control host computer, can be achieved with whole detection work, while gas parameter detection instrument can be convenient
From installation shell unload be independently operated, realize centralized detecting and independent detection combination.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, to the greatest extent
Invention is explained in detail referring to above-described embodiment for pipe, it should be understood by those ordinary skilled in the art that: still
It can be with modifications or equivalent substitutions are made to specific embodiments of the invention, and without departing from any of spirit and scope of the invention
Modification or equivalent replacement, should all cover within the scope of the claims of the present invention.
Claims (6)
1. a kind of sulfur hexafluoride Condition Detection nigration system, which is characterized in that the pilot system includes chromatography
Instrument, industrial personal computer, automatic control system PLC and detection instrument pipe-line system；
The chromatograph, automatic control system PLC and detection instrument pipe-line system are connect with the industrial personal computer；
The automatic control system PLC includes gas circuit selection solenoid valve, mass flowmenter, vacuum pump and exhaust system；Institute
Gas circuit selection solenoid valve, mass flowmenter, vacuum pump and exhaust system is stated to connect with industrial personal computer；
The detection instrument pipe-line system includes temperature and humidity measuring instrument, decomposition product measuring instrument, purity determination instrument and test tube detection
Module；The decomposition product measuring instrument is connect with the industrial personal computer and purity determination instrument respectively；The purity determination instrument also with it is described
Temperature and humidity measuring instrument connection；The temperature and humidity measuring instrument is also connect with the test tube detection module；The test tube detection module is also
It is connect with the industrial personal computer.
2. sulfur hexafluoride Condition Detection nigration system as described in claim 1, which is characterized in that the test system
System further includes having three-way magnetic valve, and the three-way magnetic valve is connect by intermediate relay with the automatic control system PLC；
The three-way magnetic valve is also connect with test tube detection module.
3. sulfur hexafluoride Condition Detection nigration system as described in claim 1, which is characterized in that the test system
System further includes having mass flowmenter, and the mass flowmenter is connect by the port AD with automatic control system PLC, for that will flow
It measures signal and industrial personal computer is uploaded to by the port AD of PLC, and receive what automatic control system PLC was exported by the port DA simultaneously
Control signal.
4. sulfur hexafluoride Condition Detection nigration system as described in claim 1, which is characterized in that the test system
System further includes having vacuum feedback module, and the vacuum feedback module is connect by the port AD with automatic control system PLC, is used for
Vacuum feedback signal is uploaded to industrial personal computer by the port AD of PLC；And automatic control system PLC is received simultaneously and passes through the end DA
The control signal of mouth output.
5. sulfur hexafluoride Condition Detection nigration system as described in claim 1, which is characterized in that the chromatograph
For 7890 chromatograph of Agilent, the temperature and humidity measuring instrument is 601FD, and the decomposition product measuring instrument is 601FA, and the purity is surveyed
Amount instrument is 500FP.
6. sulfur hexafluoride Condition Detection nigration system as described in claim 1, which is characterized in that the industrial personal computer
It is also connect with external power supply, the external power supply is alternating current 220V or generator power supply.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112697747A (en) * | 2020-12-04 | 2021-04-23 | 贵州电网有限责任公司 | Device and method for detecting decomposer, moisture and purity in sulfur hexafluoride gas |
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| CN103592582A (en) * | 2013-11-07 | 2014-02-19 | 国家电网公司 | Sulfur hexafluoride decomposition experiment system |
| CN203894243U (en) * | 2013-12-27 | 2014-10-22 | 广东电网公司电力科学研究院 | Automatic sulfur hexafluoride online sampling and detecting device |
| CN105181856A (en) * | 2015-11-05 | 2015-12-23 | 广东电网有限责任公司电力科学研究院 | Automatic detection device for insulated gas of single-hole sulfur hexafluoride electrical equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112697747A (en) * | 2020-12-04 | 2021-04-23 | 贵州电网有限责任公司 | Device and method for detecting decomposer, moisture and purity in sulfur hexafluoride gas |
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