CN109261079A - Medicine system and adding method thereof - Google Patents
Medicine system and adding method thereof Download PDFInfo
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- CN109261079A CN109261079A CN201811168008.3A CN201811168008A CN109261079A CN 109261079 A CN109261079 A CN 109261079A CN 201811168008 A CN201811168008 A CN 201811168008A CN 109261079 A CN109261079 A CN 109261079A
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- solenoid valve
- control module
- medicine system
- measurement unit
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/02—Feed or outlet devices; Feed or outlet control devices for feeding measured, i.e. prescribed quantities of reagents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/008—Feed or outlet control devices
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- Sampling And Sample Adjustment (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
The present invention provides a kind of medicine system, it includes chemicals dosing plant and controller, the dosing pipe that chemicals dosing plant includes reagent temporary tank, is connect with the output end of reagent temporary tank, and airflow measurement unit and solenoid valve on dosing pipe are set, for reagent temporary tank for holding source chemicals, airflow measurement unit is for real time measure dosage and exports instantaneous flow rate signal；Controller includes control module, and control module is electrically connected with airflow measurement unit and solenoid valve respectively, is opened for controlling solenoid valve, and continues to receive the instantaneous flow rate signal of airflow measurement unit output, and controls solenoid valve according to reception result and close.Correspondingly, a kind of adding method thereof is also provided.The present invention reduces the dose of radiation and working strength of site operation personnel compared to existing human metering dosing side formula, effectively increases dosing accuracy of measurement, reproducible, is especially suitable for low dose reagent dosing process.
Description
Technical field
The present invention relates to nuclear chemical industry production technical fields, and in particular to a kind of medicine system and a kind of adding method thereof.
Background technique
In nuclear chemical industry production, classes of agents (nitric acid, formic acid, kerosene etc.) plays in nuclear chemical industry production-line technique process
Important function is directly related to the quality of the effect and product reacted in production process.
However, due to the process features that nuclear chemical industry production line is produced with small lot, discontinuously, part dosing process dosage
Small (0.25≤dosage≤10L), dosage required precision is high (≤5mL), and existing production line utilizes human metering dosing, this
The artificial dosing side's formula of kind only relies on artificial experience to operate, and one side dosing accuracy of measurement cannot be guaranteed, and poor repeatability is another
Aspect dosing process operates in glove box, and operation difficulty is big, this not only increases operator's intensity, also increases personnel
The risk irradiated by dosage.
Therefore, this field urgently proposes a kind of nuclear chemical industry production line reagent Automatic Dosing scheme, to realize low dose of reagent
The automation of dosing process, reduces the dose of radiation and working strength of site operation personnel, and improves dosing precision, makes product matter
The consistency of amount is guaranteed.
Summary of the invention
In order at least partly solve nuclear chemical industry production line low dose reagent existing in the prior art manually measure plus
Medicine, the not high technical problem of dosing precision and complete the present invention.
Solving technical solution used by present invention problem is:
The present invention provides a kind of medicine system comprising chemicals dosing plant and controller, the chemicals dosing plant include that reagent is temporary
The dosing pipe depositing slot, connecting with the output end of the reagent temporary tank, and the flow being arranged on the dosing pipe are surveyed
Unit and solenoid valve are measured, for holding source chemicals, the airflow measurement unit adds the reagent temporary tank for real time measure
Dose simultaneously exports instantaneous flow rate signal；The controller includes control module, the control module respectively with the flow measurement
Unit and solenoid valve electrical connection, are opened for controlling the solenoid valve, and continue to receive the airflow measurement unit output
Instantaneous flow rate signal, and the solenoid valve is controlled according to reception result and is closed.
Optionally, the control module is specifically used for:
The instantaneous flow rate signal is accumulated using flux cumulating algorithm, to obtain integrated flux FQ；
Threshold value A is calculated, wherein threshold value A=dosage setting value C- dosage deviation Q；
As FQ >=A, controls the solenoid valve and close.
Optionally, the dosage deviation Q is calculated using following formula (1):
Q=B*F+X (1)
In formula (1), B is deviation factor, and instantaneous velocity when F is electromagnetism valve breakdown, X is offset.
Optionally, the deviation factor B is calculated using following formula (2):
In formula (2), Q0It is calculated using following formula (3), F0It is calculated using following formula (4):
Q0=(Qk+1+Qk+2+……+Qn)/(n-k) (3)
F0=(Fk+1+Fk+2+……+Fn)/(n-k) (4)
The offset X is calculated using following formula (5):
X=[(Q1-B*F1)+(Q2-B*F2)+……+(Qn-B*Fn)]/n (5)
In formula (2) into formula (5), n and k are natural number, and wherein n is test number (TN), and n >=10,0≤k≤n；
QiFor dosage deviation in i-th group of test, FiFor the instantaneous velocity before electromagnetism valve breakdown in i-th group of test, and i successively take 1 to
n。
Optionally, the controller further includes communication module, and the communication module is electrically connected with the control module；It is described
Control module is also electrically connected by the communication module with long-range third party control system.
Optionally, the controller further includes power module, the power module respectively with the control module, the stream
Phasor measurement unit and solenoid valve electrical connection.
Optionally, the airflow measurement unit uses electromagnetic flowmeter；The solenoid valve uses direct acting formula bi-directional electromagnetic
Valve.
Optionally, the controller further includes man-machine interface and development interface module.
Optionally, the chemicals dosing plant further includes the manual dosing bypass connecting with the output end of the reagent temporary tank,
And hand stop valve and meter in the manual dosing bypass are set.
The present invention also provides a kind of adding method thereofs applied to above-mentioned medicine system comprising following steps:
Control module controls the solenoid valve and opens, and starts dosing；
Control module persistently receives the instantaneous flow rate signal of the airflow measurement unit output；
Control module controls the solenoid valve according to reception result and closes, and terminates dosing.
The utility model has the advantages that
Medicine system of the present invention forms a feedback closed loop control by airflow measurement unit, solenoid valve and controller
System is realized the automation of dosing process by the opening and closing of the solenoid valve on control module control dosing pipe within the system,
Compared to existing human metering dosing side formula, the dose of radiation and working strength of site operation personnel are reduced；Moreover, control
The instantaneous flow rate signal of module combination airflow measurement unit output is closed to control solenoid valve, effectively increases dosing accuracy of measurement,
It is reproducible, it is especially suitable for low dose reagent dosing process.
Detailed description of the invention
The structural schematic diagram of chemicals dosing plant in the medicine system that Fig. 1 provides for the embodiment of the present invention 1；
The structural block diagram of controller in the medicine system that Fig. 2 provides for the embodiment of the present invention 1；
Fig. 3 is the schematic diagram of man-machine interface in Fig. 2；
Fig. 4 is a kind of flow chart for adding method thereof that the embodiment of the present invention 2 provides；
Fig. 5 is the flow chart for another adding method thereof that the embodiment of the present invention 2 provides.
In figure: 1- reagent temporary tank；2- liquidometer；3- dosing pipe；4- airflow measurement unit；5- solenoid valve；
The manual dosing bypass of 6-；7- meter；8~12- hand stop valve；13- control module；14- communication module；15-
Tripartite's control system；16- development interface module；17- man-machine interface；18- development interface module.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, with reference to the accompanying drawings and examples to this
Invention is described in further detail.
Embodiment 1:
A kind of medicine system is present embodiments provided, specially a kind of accurate automatic medicament feeding system of reagent.
As depicted in figs. 1 and 2, the medicine system includes chemicals dosing plant and controller.Chemicals dosing plant includes that reagent is temporary
Slot 1, the dosing pipe 3 being connect with the output end of reagent temporary tank 1, and the airflow measurement unit 4 being arranged on dosing pipe 3
With solenoid valve 5；For reagent temporary tank 1 for holding source chemicals, airflow measurement unit 4 is for real time measure dosage and exports wink
When flow signal, solenoid valve 5 is used to control the connection and cut-off of dosing pipe 3.Controller includes control module 13, control module
13 are electrically connected with airflow measurement unit 4 and solenoid valve 5 respectively, open for controlling solenoid valve 5 in dosing, and continue receiving stream
The instantaneous flow rate signal that phasor measurement unit 4 exports, and solenoid valve 5 is controlled according to reception result and is closed.
Wherein, the volume of reagent temporary tank 1 ranges preferably from 30~50L.Existing electromagnetism can be used in airflow measurement unit 4
Flowmeter, electromagnetic flowmeter survey flow velocity range preferably from 0.3~10m/s, inside nominal diameter range preferably from DN2.5~
15mm.Existing direct acting formula bidirectional electromagnetic valve can be used in solenoid valve 5, and this solenoid valve is closed type, that is, closes after powering off.Control
Molding block 13 can be programmable controller, the realization etc. for signal processing, calculating and programmed algorithm.
In the present embodiment, a feeding back closed-loop control system is formed by airflow measurement unit, solenoid valve and controller,
In the system, the automation of dosing process is realized by the opening and closing of the solenoid valve on control module control dosing pipe, compared to
Existing human metering dosing side formula reduces the dose of radiation and working strength of site operation personnel；Moreover, control module knot
The instantaneous flow rate signal of interflow phasor measurement unit output is closed to control solenoid valve, effectively increases dosing accuracy of measurement, repeatability
It is good, it is especially suitable for low dose reagent dosing process.
The working principle of control module 13 is described below in detail.
Control module 13 is specifically used for: being accumulated using flux cumulating algorithm to instantaneous flow rate signal, to be accumulated
Flow FQ；Threshold value A is calculated, wherein threshold value A=dosage setting value C- dosage deviation Q；As FQ >=A, solenoid valve is controlled
It closes.
In the present embodiment, solenoid valve is just turned off when meeting FQ >=(C-Q), that is, passes through the square formula of dosage lag compensation
Solenoid valve is turned off in advance, dosage lags caused by avoiding the error due to existing for solenoid valve and controller etc., and effective gram
Taken system hysteresis error, it can be achieved that dosage accurate control, to realize accurate, the Automatic Dosing of standard reagent.Wherein,
Dosage setting value C and dosage deviation Q can combine actual conditions to set by those skilled in the art.
Further, inventor obtains through a large number of experiments analytical calculation, instantaneous when dosage deviation Q is with electromagnetism valve breakdown
Flow rate F is at linear approximate relationship, therefore dosage deviation Q is calculated using following formula (1):
Q=B*F+X (1)
In formula (1), B is deviation factor, and instantaneous velocity when F is electromagnetism valve breakdown, X is offset.
In the present embodiment, if the structure of chemicals dosing plant is constant, B and X are constant, and those skilled in the art can basis
The practical structures of chemicals dosing plant set the value of B and X.
In practical applications, the value of B and X can be calculated according to n group test data.
For a certain chemicals dosing plant, it is as shown in the table to obtain test data, test number (TN) n=20.
Specifically, deviation factor B is calculated using following formula (2):
In formula (2), Q0It is calculated using following formula (3), F0It is calculated using following formula (4):
Q0=(Qk+1+Qk+2+……+Qn)/(n-k) (3)
F0=(Fk+1+Fk+2+……+Fn)/(n-k) (4)
Data in formula (2) to (4) substitution above table can be calculated if k takes 0:
Q0=40.434, F0=7.17, B=5.5.
Offset X is calculated using following formula (5):
X=[(Q1-B*F1)+(Q2-B*F2)+……+(Qn-B*Fn)]/n (5)
According to the Q having calculated that0、F0, B value, by formula (5) substitute into above table in data, can calculate:
X=1.
In formula (2) into formula (5), n and k are natural number, and wherein n is test number (TN), and n >=10,0≤k≤n；
QiFor dosage deviation in i-th group of test, FiFor the instantaneous velocity before electromagnetism valve breakdown in i-th group of test, and i successively take 1 to
n。
Wherein, QiFor in i-th group of test, until medicine system is stable, dosing pipe Chinese medicine stops after electromagnetism valve breakdown
When flowing, the dosage deviation of system totality, and deviation=actual measurement integrated flux-dosage setting value.Chemicals dosing plant is being opened
The data obtained when test that begin are simultaneously unstable, generally require 1 to 3 group test data of removal, therefore the value of k depends on test number
According to stability.In practical application, needing the test data of instantaneous velocity F when dosage deviation Q and electromagnetism valve breakdown
It is coupled into curve, and whether linearly judges whether test data is stable according to the curve.
In the present embodiment, after calculating deviation factor B and offset X according to test data, control module can press automatically
Different instantaneous streams are calculated from the mathematics computing model (formula (1)) of instantaneous velocity F when electromagnetism valve breakdown according to dosage deviation Q
Dosage deviation Q under fast F, in conjunction with dosage setting value C and integrated flux FQ, so that it may obtain what control solenoid valve was closed
Opportunity, to realize the accurate control of dosage.
As shown in Fig. 2, the controller further includes communication module 14.Communication module 14 is electrically connected with control module 13；Control
Molding block 13 is also electrically connected by communication module 14 with long-range third party control system 15.
Wherein, communication module 14 can provide 2 road RS485 communication interfaces, Modbus-RTUxiey be supported, for being with other
The communication of system.
In the present embodiment, due to being provided with communication module, the dosing can be remotely operated by third party control system
System, to realize the remote auto operation of dosing process.
As shown in Fig. 2, the controller further includes power module 16.Power module 16 respectively with control module 13, electromagnetism
Flowmeter (airflow measurement unit 4) and solenoid valve 5 are electrically connected, for powering for this three.
Wherein, power module 16 can provide 24VDC, 500W power input all the way, and be respectively used to as electromagnetic flowmeter
Two-way 24VDC, 100W power supply output powered with solenoid valve 5.
As shown in Fig. 2, the controller further includes man-machine interface 17 and development interface module 18.
Wherein, man-machine interface 17 can be used for the aobvious of the parameters such as medicine system dosage, instantaneous flow, integrated flux
Show, the setting of Internal system parameters and the control of medicine system etc..Development interface module 18 can provide 1 road USB interface and
RJ45 interface is used for program download interface.
As shown in figure 3, man-machine interface includes display area, function key and number key etc..Specifically, F1 key is just
Ground/long-range switch key may be selected medicine system and be in control mould formula on the spot or long-range control mould formula, controls when selection is long-range
When mould formula, medicine system can receive the control of third party control system by communication bus；F2 key is hand/from selection key, can
Select manual dosing mould formula or Automatic Dosing mould formula；F3 key be parameter setting key, can cooperate up and down operation key (scheme
Arrow key up and down in 3) and enter key complete the setting of Internal system parameters；F4/F5 key is spare key；SET key is dosing
Setting value set key is measured, number key 0-9 can be cooperated to complete the setting of dosage setting value；STA key is medicine system start key, is used
In opening solenoid valve under manual, Automatic Dosing mould formula；REC key is reset key, for closing electromagnetism under manual mould formula
Valve, system reset under automatic mold formula；OK key is acknowledgement key, for parameter setting, the confirmation operation of Adding medicine control process；DEL
Key is delete key.
In conclusion controller is the core of entire medicine system comprising power module 16, communication module 14, exploitation
Interface module 18 and man-machine interface 17 should also include being used cooperatively with control module 13 for instrument signal input certainly
Input module, and for instrument signal output output module, wherein input module for receive electromagnetic flowmeter offer
1 tunnel 4~20mA signal, output module be used for solenoid valve provide 1 way switch amount output signal, with control solenoid valve open or
It closes.These modules cooperate, the reality for signal processing, calculating, the display of dosing procedure parameter, control and programmed algorithm
Now etc..
Therefore, the function of the controller includes the input and output of instrument signal, signal processing, calculating, instrument valve confession
Electricity, logical algorithm realize that procedure parameter (dosage setting value, instantaneous flow, integrated flux etc.) display, medicine system controls,
With other systems interface realize etc..
By the setting of aforementioned functional module, so that the medicine system has following function:
1) there is hand/automatic switching function, it can be achieved that completing dosing process under automatic, manual two kinds of mould formula.
2) the real-time online input of dosage setting value can be realized in man-machine interface.
3) reagent dosing process can be automatically performed according to dosage setting value under automatic mold formula.
It 4) can online, real-time display instantaneous flow, integrated flux, dosage setting value, valve state, hand/from state, just
The key parameters such as ground/remote status.
As shown in Figure 1, the chemicals dosing plant further includes the manual dosing bypass 6 connecting with the output end of reagent temporary tank 1,
And hand stop valve 8 and meter 7 in manual dosing bypass 6 are set.Wherein, meter 7 is measured for human assistance
Dosage does not use meter 7 certainly under normal Automatic Dosing operating condition；Hand stop valve 8 is for manually controlling manual dosing
The connection and cut-off of bypass 6.
In the present embodiment, the output end of the reagent temporary tank is also connected with manual dosing bypass, and bypasses in manual dosing
Upper setting hand stop valve and meter can be used for automatic medicine adding apparatus (including controller, airflow measurement unit and solenoid valve)
Manual dosing under fault condition.
Certainly, hand stop valve can be respectively set before each capital equipment on the pipeline of chemicals dosing plant, these hand stop valves
It is in normally open in normal conditions, is closed when system maintenance or maintenance.
Specifically, dosing pipe 3 and manual dosing bypass 6 are in parallel, the output end of the entrance of the two and reagent temporary tank 1 it
Between by entrance pipe be connected to, be connected between the outlet and process equipment entrance of the two by export pipeline.The entrance pipe
On be provided with hand stop valve 9；Hand stop valve 10 is additionally provided on dosing pipe 3, and solenoid valve 5 is arranged in flow measurement list
Between member 4 and hand stop valve 10, wherein airflow measurement unit 4 is opposite closer to reagent temporary tank 1；Meter 7 is arranged in institute
It states on export pipeline, and on the export pipeline, 7 front and back of meter, is respectively arranged with hand stop valve 11 and manual shutoff
Valve 12.
In addition, as shown in Figure 1, being additionally provided with liquidometer 2 on reagent temporary tank 1.Liquidometer 2 is temporary for real-time measurement reagent
The liquid level of reagent in slot 1 is deposited, to judge whether the reagent in reagent temporary tank 1 is sufficient.
As can be seen that medicine system provided in this embodiment includes chemicals dosing plant and controller two parts, wherein dosing is filled
It sets mainly using flow by gravity principle, in conjunction with controller, so that it may realize reagent Automatic Dosing process.
Moreover, during Automatic Dosing, since there are errors for solenoid valve and controller etc., if reached in integrated flux FQ
Solenoid valve is just closed when to dosage setting value C, there is lag in dosage, thus low dose of reagent (0.25L≤dosage≤
Dosing precision 10L) is seriously affected during dosing, is not able to satisfy manufacturing technique requirent.The present embodiment is lagged by dosage and is mended
The square formula repaid turn off solenoid valve in advance, it can be achieved that dosage accurate control.
For inventor experiment proves that learning, medicine system described in the present embodiment is realizing nuclear chemical industry production line low dose reagent
During (0.25L≤dosage≤10L) Automatic Dosing, dosage controls Error Absolute Value≤3mL, and dosing precision is original to be higher than
The precision of human metering dosing process, and it is reproducible, it is able to satisfy the technique requirement of production line.
Embodiment 2:
Present embodiments provide a kind of adding method thereof applied to medicine system described in embodiment 1.As shown in figure 4, described
Adding method thereof includes the following steps S101 to S103.
S101. control module control solenoid valve is opened, and starts dosing；
S102. control module persistently receives the instantaneous flow rate signal of airflow measurement unit output；
S103. control module controls solenoid valve according to reception result and closes, and terminates dosing.
In the present embodiment, the opening and closing of control module control solenoid valve realizes the automation of dosing process, compared to existing
Human metering dosing side formula reduces the dose of radiation and working strength of site operation personnel；Moreover, control module combines stream
The instantaneous flow rate signal of phasor measurement unit output is closed to control solenoid valve, effectively increases dosing accuracy of measurement, reproducible, especially
It is suitble to low dose of reagent dosing process.
Step S103 specifically:
Control module is accumulated using the instantaneous flow rate signal that flux cumulating algorithm exports airflow measurement unit, with
To integrated flux FQ, the system scan period should be less than or be equal to 500ms；Control module calculates threshold value A, wherein threshold value A=dosing
Measure setting value C- dosage deviation Q；As FQ >=A, control module controls solenoid valve and closes.Wherein, dosage deviation Q
Calculating side's formula is described in detail in embodiment 1, and details are not described herein again.
In the present embodiment, solenoid valve is just turned off when meeting FQ >=(C-Q), it is seen that step S103 provides a kind of reagent essence
The dosage lag compensation method of true automatic medicament feeding system, i.e., turn off electromagnetism by the square formula of dosage lag compensation in advance
Valve, dosage lags caused by avoiding the error due to existing for solenoid valve and controller etc., effectively overcomes system lag
Error, it can be achieved that dosage accurate control, to realize accurate, the Automatic Dosing of standard reagent.
Before step S101, it may also include the steps of S100-1 and S100-2.
S100-1. start the controller of medicine system；
S100-2. make system reset (i.e. integrated flux clearing), dosage setting value C is set.
After step S103 terminates, shows that this dosing process terminates, next round feeding operations, i.e. return step can be started
S100-2。
The present embodiment additionally provides another adding method thereof for being applied to medicine system described in embodiment 1.As shown in figure 5,
The adding method thereof includes the following steps S200 to S223.
S200. prepare before dosing.System electrification, and guarantee that amount of reagent is sufficient in reagent temporary tank, prepare to start dosing.
S201. medicine system is selected be in Work in Place mould formula or telework mould public affairs by the spot/long-range switch key
Formula, if selection Work in Place mould formula, thens follow the steps S202；If selecting telework mould formula, then follow the steps
S216。
S202. by hand/from selection key select medicine system be in automatic mold formula or manual mould formula, if selection oneself
Dynamic model formula, thens follow the steps S203；If selecting manual mould formula, S211 is thened follow the steps.
S203. medicine system is run under automatic mold formula.
S204. medicine system resets.Reset medicine system by reset key, integrated flux FQ is reset.
S205. dosage is set.By dosage setting value set key, dosage setting value is completed in conjunction with number key 0-9
Setting.
S206. medicine system starts.Start medicine system by medicine system start key, starts dosing.
S207. solenoid valve is opened, dosing is started.
S208. threshold value A is calculated.After solenoid valve is opened, reagent begins flow through electromagnetic flowmeter, and instantaneous flow starts to accumulate,
Then control module calculates threshold value A automatically, wherein threshold value A=dosage setting value C- dosage deviation Q.Wherein, dosage is inclined
Calculating side's formula of difference Q is described in detail in embodiment 1, and details are not described herein again.
S209. control module judges whether to meet FQ >=A, if it is satisfied, then executing step S201, otherwise, return step
S209。
S210. Self-shut electromagnetic valve terminates dosing.
S211. medicine system is run under manual mould formula.
S212. dosage is set.
S213. hand stop valve 8 is opened, dosing is started.
S214. whether artificial judgment meter indicating value reaches dosage setting value, if so, S215 is thened follow the steps, otherwise,
Return step S214.
S215. hand stop valve 8 is closed, dosing is terminated.
S216. medicine system is in the automatic mold formula under PLC/DCS control.
S217. medicine system resets.Long-range control medicine system resets, and integrated flux FQ is reset.
S218. dosage is set.The long-range setting for completing dosage setting value.
S219. medicine system starts.Long-range starting medicine system, starts dosing.
S220. remotely control solenoid valve is opened, and starts dosing.
S221. threshold value A is calculated.After solenoid valve is opened, reagent begins flow through electromagnetic flowmeter, and instantaneous flow starts to accumulate,
Then control module calculates threshold value A automatically, wherein threshold value A=dosage setting value C- dosage deviation Q.Wherein, dosage is inclined
Calculating side's formula of difference Q is described in detail in embodiment 1, and details are not described herein again.
S222. control module judges whether to meet FQ >=A, if it is satisfied, then executing step S223, otherwise, return step
S222。
S223. Self-shut electromagnetic valve terminates dosing.
Using dosage lag compensation side formula, it can be achieved that the accurate control of dosage in adding method thereof described in the present embodiment
System, dosage control Error Absolute Value≤3mL, and dosing precision is much higher than the precision of human metering dosing process, and realizes
Teletransmission is automatically brought into operation.
In conclusion the application of reagent accurate automatic medicament feeding system and adding method thereof through the invention, solves nuclear chemical industry
The human metering problem of production line low dose reagent dosing process, improves reagent efficacy of drug administration, realizes the remote of dosing process
Journey is automatically brought into operation, and is improved reagent dosage control precision, is reduced the dose of radiation of personnel, have design science, stability
High, safe and reliable advantage.
It is understood that the principle that above embodiment party's formula is intended to be merely illustrative of the present and the exemplary reality that uses
The side's of applying formula, however the present invention is not limited thereto.For those skilled in the art, the present invention is not being departed from
Spirit and essence in the case where, various changes and modifications can be made therein, these variations and modifications are also considered as protection of the invention
Range.
Claims (10)
1. a kind of medicine system, which is characterized in that including chemicals dosing plant and controller, the chemicals dosing plant includes that reagent is temporary
Slot, the dosing pipe being connect with the output end of the reagent temporary tank, and the flow measurement being arranged on the dosing pipe
Unit and solenoid valve, the reagent temporary tank are used for real time measure dosing for holding source chemicals, the airflow measurement unit
It measures and exports instantaneous flow rate signal；The controller includes control module, the control module respectively with the flow measurement list
The first and described solenoid valve electrical connection, is opened for controlling the solenoid valve, and continues to receive the airflow measurement unit output
Instantaneous flow rate signal, and the solenoid valve is controlled according to reception result and is closed.
2. medicine system according to claim 1, which is characterized in that the control module is specifically used for:
The instantaneous flow rate signal is accumulated using flux cumulating algorithm, to obtain integrated flux FQ；
Threshold value A is calculated, wherein threshold value A=dosage setting value C- dosage deviation Q；
As FQ >=A, controls the solenoid valve and close.
3. medicine system according to claim 2, which is characterized in that the dosage deviation Q uses following formula (1)
It is calculated:
Q=B*F+X (1)
In formula (1), B is deviation factor, and instantaneous velocity when F is electromagnetism valve breakdown, X is offset.
4. medicine system according to claim 3, which is characterized in that
The deviation factor B is calculated using following formula (2):
In formula (2), Q0It is calculated using following formula (3), F0It is calculated using following formula (4):
Q0=(Qk+1+Qk+2+……+Qn)/(n-k) (3)
F0=(Fk+1+Fk+2+……+Fn)/(n-k) (4)
The offset X is calculated using following formula (5):
X=[(Q1-B*F1)+(Q2-B*F2)+……+(Qn-B*Fn)]/n (5)
In formula (2) into formula (5), n and k are natural number, and wherein n is test number (TN), and n >=10,0≤k≤n；QiIt is
Dosage deviation in the test of i group, FiFor the instantaneous velocity before electromagnetism valve breakdown in i-th group of test, and i successively takes 1 to n.
5. medicine system described in any one of -4 according to claim 1, which is characterized in that the controller further includes communication mould
Block, the communication module are electrically connected with the control module；The control module also passes through the communication module and long-range the
The electrical connection of tripartite's control system.
6. medicine system described in any one of -4 according to claim 1, which is characterized in that the controller further includes power supply mould
Block, the power module are electrically connected with the control module, the airflow measurement unit and the solenoid valve respectively.
7. medicine system according to claim 6, which is characterized in that the airflow measurement unit uses electromagnetic flowmeter；
The solenoid valve uses direct acting formula bidirectional electromagnetic valve.
8. medicine system described in any one of -4 according to claim 1, which is characterized in that the controller further includes human-machine interface
Mouth interface and development interface module.
9. medicine system described in any one of -4 according to claim 1, which is characterized in that the chemicals dosing plant further includes and institute
The manual dosing bypass of the output end connection of reagent temporary tank is stated, and the manual shutoff being arranged in the manual dosing bypass
Valve and meter.
10. a kind of adding method thereof applied to the medicine system as described in any one of claim 1-9, which is characterized in that including
Following steps:
Control module controls the solenoid valve and opens, and starts dosing；
Control module persistently receives the instantaneous flow rate signal of the airflow measurement unit output；
Control module controls the solenoid valve according to reception result and closes, and terminates dosing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811168008.3A CN109261079B (en) | 2018-10-08 | 2018-10-08 | Dosing system and dosing method |
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| Application Number | Priority Date | Filing Date | Title |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114100499A (en) * | 2021-10-19 | 2022-03-01 | 中国核电工程有限公司 | Automatic nitric acid preparation system and method for automatically preparing nitric acid solution |
| CN115957713A (en) * | 2022-12-20 | 2023-04-14 | 江苏奥喜埃化工有限公司 | Sodium hypochlorite production system of protection production line |
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| CN114100499A (en) * | 2021-10-19 | 2022-03-01 | 中国核电工程有限公司 | Automatic nitric acid preparation system and method for automatically preparing nitric acid solution |
| CN114100499B (en) * | 2021-10-19 | 2024-03-05 | 中国核电工程有限公司 | Automatic nitric acid preparation system and method for automatically preparing nitric acid solution |
| CN115957713A (en) * | 2022-12-20 | 2023-04-14 | 江苏奥喜埃化工有限公司 | Sodium hypochlorite production system of protection production line |
| CN115957713B (en) * | 2022-12-20 | 2023-12-01 | 江苏奥喜埃化工有限公司 | Sodium hypochlorite production system of protection production line |
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| CN109261079B (en) | 2021-08-13 |
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