CN108766612A - A kind of novel nuclear fuel reprocessing plant's evaporator process detection and debugging system - Google Patents
A kind of novel nuclear fuel reprocessing plant's evaporator process detection and debugging system Download PDFInfo
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- CN108766612A CN108766612A CN201810341240.6A CN201810341240A CN108766612A CN 108766612 A CN108766612 A CN 108766612A CN 201810341240 A CN201810341240 A CN 201810341240A CN 108766612 A CN108766612 A CN 108766612A
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- instrument
- nuclear fuel
- bus
- valve
- steam inlet
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Classifications
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/04—Treating liquids
- G21F9/06—Processing
- G21F9/08—Processing by evaporation; by distillation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The present invention relates to a kind of novel nuclear fuel reprocessing plant's evaporator process detection and debugging systems, including controller and instrumentation；The instrument layer equipment is connected into the controller by foundation fieldbus.The beneficial effects of the present invention are：Using foundation fieldbus (Foundation Fieldbus, abbreviation FF) smart machine replacement traditional equipment, the analog signals such as 4-20mA and thermocouple are become more accurate digital quantity signal to procedure parameter progress observing and controlling using FF bus intelligents equipment to be transmitted in bus, help to improve transmission precision and efficiency.
Description
Technical field
The invention belongs to nuclear engineering apparatus fields, and in particular to a kind of novel nuclear fuel reprocessing plant's evaporator process detection
And debugging system.
Background technology
Non-boiling natural-circulation evaporator is a kind of important equipment in engineering for nuclear fuel reprocessing, can be real using evaporator
The concentration of existing radioactive liquid waste, reduces waste storage amount, reaches waste minimization.Rigorous service condition due to evaporator and companion
There are the danger that " red oil " explodes, the accurate various parameters measured in evaporator operational process and the operation item for strictly controlling evaporator
Part is very important.The important detection parameters of evaporator include liquid level, density, temperature and pressure, these parameters are all to protect
Card evaporation quality and evaporator are essential safely.
Since there is medium radioactivity, evaporator to be placed in the canyon of shielding, personnel cannot closely observe, therefore
Liquid level, density and temperature use contactless indirect measurement scheme, and wherein liquid level and density uses blowing type measurement method, liquid
Place value forms regulating loop with feed conveying device, controls charging and discharging liquid measure；Temperature uses Quick-munting-dismounting electric thermocouple, temperature value
Regulating loop is formed with the regulating valve of steam inlet, controls evaporating temperature.Pressure is that no radioactive saturation is steamed due to survey
Vapour is using common pressure transmitter, but the switch valve of pressure and temperature co- controlling steam inlet, protection evaporator are pacified
Entirely.
The process testing process of evaporator is as shown in Figure 1.
The dedicated compressed air of air blowing instrument passes through the small stream of air after vacuum filter decompression in blowning installation and voltage stabilizing
Amount controller, root valve and gas blow pipe are blown into pulse extraction column.When blow gas pressure is higher than gas blow pipe lower end nozzle in gas blow pipe
When static pressure, compressed air is just escaped from the lower end nozzle of gas blow pipe in the form of bubbles.Adjust the small flow control of air of blowning installation
Device processed makes compressed air steadily be blown into storage tank with the uniform flow of very little, and the pressure at this moment measured is almost close to lower end nozzle
Locate the pressure of liquid level.Liquid level in evaporator, density value all can be by the differential pressure value meters that are measured between corresponding two gas blow pipes at this time
It obtains.Calculation formula is as follows：
L=Δs PL×103/(D×g)……………………………………(1)
D=Δs PD×103/(g×HD)……………………………………(2)
In formula：
ΔPD、ΔPL--- pressure difference, unit：kPa；
L、HD--- liquid level or the air blowing nozzle spacing for measuring density, unit：mm；
D --- solution density, unit：g/cm3；
G --- acceleration of gravity, unit：m/s2。
By formula (1) (2) it is found that although air blowing mensuration avoids being in direct contact for instrument and radiating medium, but this
What kind method instrument was measured is differential pressure value, cannot directly measure the numerical value of required parameter, it is necessary to pass through other parameters and formula meter
Calculation can just obtain, although can will switch to after operation in these data transmissions to controller operating personnel in control room facilitate it is readable
Parameter, but scene debugging, maintenance personnel can only see the differential pressure value shown on differential pressure transmitter, it is difficult to intuitive judgment evaporate
The internal state of device.
In the prior art, each instrument is directly connected into controller (as shown in Figure 2), is counted accordingly by controller
It calculates and exports result of calculation to respective execution mechanisms.It is such to be disadvantageous in that controller load is larger, once go out present situation
Condition causes consequence more serious, and second adjusting control circuit feedback is slower, is unfavorable for adjusting in time.
In addition, several adjusting control circuits of evaporator are also that all detection parameters are transmitted to controller after calculating
Field device is sent back again.In the prior art multiple process systems are often undertaken as the computer control system of controller
Parameter calculates and communication function, the control mode of this Relatively centralized still have risk.Conventional instrument generally requires when debugging
Operating personnel are verified at the scene to every piece of instrument and parameter setting, less efficient, and are difficult to judge instrument when daily maintenance
State.
Invention content
In view of the deficiencies in the prior art, the object of the present invention is to provide a kind of novel nuclear fuel reprocessing plants to evaporate
Device process detects and debugging system, and by building bottom control circuit, realization fast and accurately controls, and reduces system risk.
Technical scheme is as follows：
A kind of novel nuclear fuel reprocessing plant's evaporator process detection and debugging system, including controller and instrumentation；
The instrument layer equipment is connected into the controller by foundation fieldbus.
Further, the detection of above-mentioned novel nuclear fuel reprocessing plant's evaporator process and debugging system, the instrument are set
Standby includes density measure instrument, level gauging instrument, temperature measuring instrument, pressure measuring instruments, steam inlet switch valve, steam
Inlet adjustment valve and evaporation feed liquor equipment.
Further, the detection of above-mentioned novel nuclear fuel reprocessing plant's evaporator process and debugging system, the liquid level are surveyed
Amount instrument, the density measure instrument and the evaporation feed liquor equipment share foundation fieldbus all the way and are connected into the control
Device.
Further, the detection of above-mentioned novel nuclear fuel reprocessing plant's evaporator process and debugging system, the density are surveyed
Instrument is measured by density value data transfer to the level gauging instrument；The intelligent object of the level gauging instrument is surveyed according to liquid level
The pressure difference and the density value that amount instrument side obtains calculate level value, which is uploaded to the controller.
Further, the detection of above-mentioned novel nuclear fuel reprocessing plant's evaporator process and debugging system, the liquid level are surveyed
Amount instrument gives level value to the evaporation feed liquor equipment, the intelligent object root of the evaporation feed liquor equipment by bus transfer
PID calculating is carried out according to the level value and setting value, and is adjusted according to calculated regulated quantity.
Further, the detection of above-mentioned novel nuclear fuel reprocessing plant's evaporator process and debugging system, the temperature are surveyed
It measures instrument, the pressure measuring instruments, the steam inlet switch valve and the steam inlet regulating valve and shares foundation all the way
Bus is connected into the controller.
Further, the detection of above-mentioned novel nuclear fuel reprocessing plant's evaporator process and debugging system, the steam enter
The valve positioner of mouth regulating valve is the valve positioner of bus-type；The intelligent object of the temperature measuring instrument is according to actual measurement
Temperature value carries out PID calculating with setting value, exports regulated quantity by bus and is adjusted to the steam inlet regulating valve.
Further, the detection of above-mentioned novel nuclear fuel reprocessing plant's evaporator process and debugging system, the steam enter
Valve position coupler is added before the electromagnetic priority valve of mouth switch valve；The temperature measuring instrument and the pressure measuring instruments pass through
Bus is connect with valve position coupler to realize that the output by the temperature measuring instrument and the pressure measuring instruments limits
Value controls the steam inlet switch valve.
Beneficial effects of the present invention are as follows：
1, the present invention is substituted using foundation fieldbus (Foundation Fieldbus, abbreviation FF) smart machine and is passed
System equipment, carrying out observing and controlling to procedure parameter using FF bus intelligents equipment becomes the analog signals such as 4-20mA and thermocouple
More accurate digital quantity signal is transmitted in bus, helps to improve transmission precision and efficiency；
2, smart machine itself has calculation function, can will be attached on the intelligent object of equipment under calculation formula, each
Smart machine can all calculate the parameter value of operator's needs and scene instruction automatically according to the signal and formula of acquisition, simultaneously will
Operation result is uploaded to control system, does not need controller and does any calculating and conversion again, mitigates controller load；
3, using bus in instrument layer building adjusting control circuit, two kinds of smart machines are passed through into bus communication, Intelligent Instrument
Table can directly control the equipment such as valve according to result of calculation, to as the slower regulating loop of the reactions such as temperature not only avoid it is long away from
Error from signal conveying, and regulating cycle is shortened, while also avoiding since controller and communication network failure draw
The possibility for the accident of rising, this has been truly realized scattered risks for having for the equipment of strict safety control requirement；
4, the debugging efforts of field device are completed in master control room.Relevant smart machine on tested measurement equipment is articulated in one
Independent bottom control network can be formed on item or different buses, operator utilizes operation screen in master control room when debugging
The parameter of field device can be changed, even if departing from master control system, third-party bus monitoring system can also be used and complete
Debugging efforts greatly improve field adjustable efficiency.
Description of the drawings
Fig. 1 is the process overhaul flow chart of evaporator.
Fig. 2 is the structure chart of the detection and debugging system of the prior art.
Fig. 3 is the structure chart of the detection and debugging system of the present invention.
In above-mentioned attached drawing, 1, level gauging instrument；2, density measure instrument；3, temperature measuring instrument；4, pressure-measuring device
Table；5, steam inlet switch valve；6, steam inlet regulating valve；7, evaporation feed liquor equipment.
Specific implementation mode
The present invention is described in detail below with reference to the accompanying drawings and embodiments.
As shown in figure 3, the present invention provides a kind of novel nuclear fuel reprocessing plant's evaporator process detection and debugging system,
Including controller and instrumentation；The instrument layer equipment is connected into the controller by foundation fieldbus.The instrument
Equipment includes density measure instrument 2, level gauging instrument 1, temperature measuring instrument 3, pressure measuring instruments 4, steam inlet switch
Valve 5, steam inlet regulating valve 6 and evaporation feed liquor equipment 7.
Specifically, the level gauging instrument 1, the density measure instrument 2 and the evaporation feed liquor equipment 7 share
Foundation fieldbus is connected into the controller all the way, uses FF bus intelligents differential pressure transmitter into line density and liquid level to realize
Measurement.In the present embodiment, the temperature measuring instrument 3, the pressure measuring instruments 4, the steam inlet switch valve 5 and institute
It states the shared foundation bus all the way of steam inlet regulating valve 6 and is connected into the controller.
The density measure instrument 2 gives density value data transfer to the level gauging instrument 1；The level gauging instrument
The pressure difference and the density value that 1 intelligent object is obtained according to 1 side of level gauging instrument calculate level value, by the level value
It is uploaded to the controller.
According to formula (1) it is found that the calculating of liquid level needs to know the density of medium, and the density in evaporator be one not
The parameter of disconnected variation, the density measure instrument 2 calculate the real-time density value of medium according to the differential pressure value and formula of measurement, so
Afterwards by bus F2 by this data transmission to the differential pressure transmitter (i.e. the level gauging instrument 1) for measuring liquid level, transmission is fast
Rate 500ms/ times.The intelligent object of the level gauging instrument 1 can be according to the differential pressure value and the penetron that oneself is measured
The density value of table 2 calculates real-time level value, and is uploaded to controller.It is surveyed it can be seen that density value is actually liquid level
One intermediate parameters of amount, do not need to monitor in real time for operator, are not just had to density using this measurement method
It measures and calculates and is introduced into control system, and live liquid crystal gauge outfit instruction is no longer differential pressure value that traditional analog instrument indicates
(unit：KPa), but through the density value (unit being calculated：kg/m3) and level value (unit：mm).
The steam inlet regulating valve 6 will be adjusted according to the temperature (temperature comes from the temperature measuring instrument 3) in evaporator
The input of steam is saved, therefore the valve positioner of bus-type is used to replace traditional electricity-gas valve positioner in the present embodiment,
Thermocouple signal completed to A/D conversions at the scene with FF bus intelligents temperature transmitter, and with the steam inlet regulating valve 6
It is communicated with one another by bus F3.Specifically, temperature value and setting of the intelligent object of the temperature measuring instrument 3 according to actual measurement
Value carries out PID calculating, exports regulated quantity by bus and is adjusted to the steam inlet regulating valve 6, need not be uploaded to control
The adjusting control in entire circuit can be completed in device processed.
Equally, level gauging instrument 1 can also form regulating loop (being realized by bus F2) with evaporation feed liquor equipment 7,
Due to level gauging instrument 1 need complete liquid level calculating, then do regulating loop calculate calculation amount it is larger, PID can also be counted
Calculation is placed in the intelligent object of the evaporation feed liquor equipment 7, and realizes that the quality of adjusting is just the same on the controller originally.
Concrete methods of realizing can be：The level gauging instrument 1 gives level value to the evaporation feed liquor equipment by bus transfer
7, the intelligent object of the evaporation feed liquor equipment 7 carries out PID calculating according to the level value and setting value, and according to calculated
Regulated quantity is adjusted.
Further, to avoid " red oil " from exploding, the temperature measuring instrument 3 and pressure measuring instruments 4 need while joining
Lock steam inlet switch valve 5.Concrete scheme can be：Valve position is added before the electromagnetic priority valve of the steam inlet switch valve 5
Coupler；The temperature measuring instrument 3 and the pressure measuring instruments 4 are connect with valve position coupler to realize by bus
The steam inlet switch valve 5 is controlled by the output limit value of the temperature measuring instrument 3 and the pressure measuring instruments 4.
In this way, the present invention largely reduces the calculation amount of controller, the work of host computer configuration in instrument layer building control loop
Work amount and network communication amount, have disperseed system risk.In the present embodiment, it is controlled and is required according to the detection of evaporator, with two
Bus completes building for the evaporator TT&C system.Temperature instrument, pressure instrumentation, 6 and of steam inlet regulating valve
Switch valve constitutes a control loop (bus F1)；Density Detection instrument, level sensing instrument and evaporation feed liquor equipment 7 are constituted
One control loop (bus F2).When debugging, operator changes the various parameters of smart machine in control room, even if after operation,
Field device can also be debugged and be diagnosed at any time using the AMS management softwares of smart machine.Equipment in every bus
It can independently debug, be not affected by other factors from an interlocked control function, each control loop is realized.
The present invention substitutes tradition using foundation fieldbus (Foundation Fieldbus, abbreviation FF) smart machine
Equipment, carrying out observing and controlling to procedure parameter using FF bus intelligents equipment becomes the analog signals such as 4~20mA and thermocouple
More accurate digital quantity signal is transmitted in bus, has both improved the accuracy and speed of in-site measurement control, also really real
The target of centralized management, decentralised control is showed；Smart machine itself has calculation function, can will be attached to equipment under calculation formula
Intelligent object on, each smart machine can automatically be calculated according to the signal and formula of acquisition operator needs parameter value
And scene instruction, while operation result is uploaded to control system, it does not need controller and does any calculating and conversion again, mitigate control
Device load processed；Using bus in instrument layer building adjusting control circuit, two kinds of smart machines are passed through into bus communication, intelligence instrument
The equipment such as valve can be directly controlled according to result of calculation, to not only being avoided over long distances as the slower regulating loop of the reactions such as temperature
The error of signal conveying, and regulating cycle is shortened, while also avoiding since controller and communication network failure cause
The possibility of accident, this has been truly realized scattered risks for having for the equipment of strict safety control requirement；It is completed in master control room
The debugging efforts of field device.Relevant smart machine on tested measurement equipment is articulated in can in one or different bus
Form independent bottom control network, operator can change the ginseng of field device in master control room using operation screen when debugging
Even if number can also be used third-party bus monitoring system and complete debugging efforts, greatly improve live tune departing from master control system
Try efficiency.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.If in this way, belonging to the model of the claims in the present invention and its equivalent technology to these modifications and changes of the present invention
Within enclosing, then the present invention is also intended to include these modifications and variations.
Claims (8)
1. a kind of novel nuclear fuel reprocessing plant's evaporator process detection and debugging system, including controller and instrumentation；Its
It is characterized in that, the instrument layer equipment is connected into the controller by foundation fieldbus.
2. novel nuclear fuel reprocessing plant's evaporator process detection as described in claim 1 and debugging system, it is characterised in that：
The instrumentation includes density measure instrument (2), level gauging instrument (1), temperature measuring instrument (3), pressure measuring instruments
(4), steam inlet switch valve (5), steam inlet regulating valve (6) and evaporation feed liquor equipment.
3. novel nuclear fuel reprocessing plant's evaporator process detection as claimed in claim 2 and debugging system, it is characterised in that：
The level gauging instrument (1), the density measure instrument (2) and the evaporation feed liquor equipment share foundation field all the way
Bus is connected into the controller.
4. novel nuclear fuel reprocessing plant's evaporator process detection as claimed in claim 3 and debugging system, it is characterised in that：
The density measure instrument (2) gives density value data transfer to the level gauging instrument (1)；The level gauging instrument (1)
The pressure difference that is obtained according to level gauging instrument (1) side of intelligent object and the density value calculate level value, by the liquid level
Value is uploaded to the controller.
5. novel nuclear fuel reprocessing plant's evaporator process detection as claimed in claim 3 and debugging system, it is characterised in that：
The level gauging instrument (1) gives level value to the evaporation feed liquor equipment (7), the evaporation feed liquor by bus transfer
The intelligent object of equipment (7) carries out PID calculating according to the level value and setting value, and is adjusted according to calculated regulated quantity
Section.
6. novel nuclear fuel reprocessing plant's evaporator process detection as claimed in claim 2 and debugging system, it is characterised in that：
The temperature measuring instrument (3), the pressure measuring instruments (4), the steam inlet switch valve (5) and the steam inlet tune
Section valve (6) shares foundation bus all the way and is connected into the controller.
7. novel nuclear fuel reprocessing plant's evaporator process detection as claimed in claim 6 and debugging system, it is characterised in that：
The valve positioner of the steam inlet regulating valve (6) is the valve positioner of bus-type；The intelligence of the temperature measuring instrument (3)
Energy module carries out PID calculating according to the temperature value of actual measurement with setting value, and regulated quantity is exported to the steam inlet tune by bus
Section valve (6) is adjusted.
8. novel nuclear fuel reprocessing plant's evaporator process detection as claimed in claim 6 and debugging system, it is characterised in that：
Valve position coupler is added before the electromagnetic priority valve of the steam inlet switch valve (5)；The temperature measuring instrument (3) and described
Pressure measuring instruments (4) is connect with valve position coupler by bus to realize through the temperature measuring instrument (3) and institute
The output limit value for stating pressure measuring instruments (4) controls the steam inlet switch valve (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810341240.6A CN108766612A (en) | 2018-04-17 | 2018-04-17 | A kind of novel nuclear fuel reprocessing plant's evaporator process detection and debugging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810341240.6A CN108766612A (en) | 2018-04-17 | 2018-04-17 | A kind of novel nuclear fuel reprocessing plant's evaporator process detection and debugging system |
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| Publication Number | Publication Date |
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| CN108766612A true CN108766612A (en) | 2018-11-06 |
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ID=64010871
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| CN201810341240.6A Pending CN108766612A (en) | 2018-04-17 | 2018-04-17 | A kind of novel nuclear fuel reprocessing plant's evaporator process detection and debugging system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112614604A (en) * | 2020-11-26 | 2021-04-06 | 中国辐射防护研究院 | Pulse extraction column organic phase ignition accident source item estimation method |
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| US6627342B1 (en) * | 1999-11-18 | 2003-09-30 | Honda Giken Kogyo Kabushiki Kaisha | Evaporator liquid fuel injection apparatus and fuel cell system |
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Application publication date: 20181106 |