CN221056337U - Primary loop water online inductively coupled plasma spectrum monitoring system - Google Patents
Primary loop water online inductively coupled plasma spectrum monitoring system Download PDFInfo
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- CN221056337U CN221056337U CN202322775569.2U CN202322775569U CN221056337U CN 221056337 U CN221056337 U CN 221056337U CN 202322775569 U CN202322775569 U CN 202322775569U CN 221056337 U CN221056337 U CN 221056337U
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- 238000009616 inductively coupled plasma Methods 0.000 title claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 238000012544 monitoring process Methods 0.000 title claims abstract description 30
- 238000001228 spectrum Methods 0.000 title claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 116
- 238000005086 pumping Methods 0.000 claims abstract description 63
- 238000005070 sampling Methods 0.000 claims abstract description 44
- 238000004458 analytical method Methods 0.000 claims abstract description 28
- 239000002699 waste material Substances 0.000 claims description 29
- 239000002253 acid Substances 0.000 claims description 21
- 230000002572 peristaltic effect Effects 0.000 claims description 13
- 238000004140 cleaning Methods 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 10
- 238000004611 spectroscopical analysis Methods 0.000 claims 6
- 230000003287 optical effect Effects 0.000 claims 5
- 239000012530 fluid Substances 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 16
- 230000008569 process Effects 0.000 abstract description 13
- 230000036541 health Effects 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 24
- 239000007924 injection Substances 0.000 description 24
- 238000010586 diagram Methods 0.000 description 6
- 238000000605 extraction Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000005253 cladding Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 238000001636 atomic emission spectroscopy Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- 238000013508 migration Methods 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model provides a primary loop water online inductively coupled plasma spectrum monitoring system, and relates to the technical field of nuclear power. The detection system comprises: the device comprises a sampling device, a control valve group, an analysis device and a pumping device; the control valve group comprises a direction selecting valve, a two-position six-way valve A, a two-position seven-way valve, a two-position six-way valve B and a two-position three-way valve A which are connected in sequence; the option valve is connected with the sampling device, the two-position seven-way valve is connected with the pumping device, the two-position three-way valve A is connected with the analysis device, and the two-position six-way valve A is also directly connected with the two-position three-way valve A; the two-position three-way valve a is used to switch the liquid flowing into the analysis device between the two-position six-way valve B and the two-position six-way valve a. Through the connection relation of the interfaces of all valves in the control valve group, the flow direction of liquid can be flexibly regulated and controlled, and automatic instrument and equipment are used for carrying out primary circuit water on-line detection, so that human errors are eliminated, and the harm to the body health of sampling personnel caused by a large number of repeated sampling processes is avoided.
Description
Technical Field
The utility model relates to the technical field of nuclear power, in particular to a primary circuit water online inductively coupled plasma spectrum monitoring system.
Background
In a nuclear power plant, a loop refers to a closed loop in which high-temperature and high-pressure steam water heated by a reactor core is conveyed to a heat transfer U-shaped pipe, and the high-temperature and high-pressure steam water is cooled and then conveyed back to the reactor core for repeated heating, and the loop is continuously circulated. The primary loop water-water chemical working condition plays a vital role in maintaining the safe operation of the nuclear power plant, reducing the corrosion of structural materials, ensuring the integrity of the pressure boundaries of the fuel cladding and the reactor coolant, reducing the radiation field, reducing the deposition of corrosion products in the fuel cladding and the migration of corrosion products in the loop, reducing the harm to the environment and improving the safe, stable and economic operation of the nuclear power plant. With the continuous expansion of the single-machine capacity of the running generator set, the system runs at ultra-high temperature and ultra-high pressure, the requirements on water quality are more and more severe, and even mug/L-level impurities can influence the long-term safe running of a power station at high temperature and high pressure. Therefore, real-time on-line monitoring of the primary circuit water quality is required.
The existing monitoring mode mainly adopts a manual mode, and needs to be sampled and inspected by an operator on site and manually detected by a detector, so that the process is long, and the real-time performance and the effectiveness of data cannot be ensured. Meanwhile, as the primary water sampling position is close to the reactor core, the sampling process is harmful to the health of sampling personnel.
Disclosure of utility model
Aiming at the defects existing in the prior art, the utility model aims to provide a loop water on-line inductively coupled plasma spectrum monitoring system, which replaces the manual sampling and detecting process with the automatic sampling and detecting process.
In order to achieve the above object, the present utility model is realized by the following technical scheme:
the utility model provides a primary loop water online inductively coupled plasma spectrum monitoring system, which comprises: the device comprises a sampling device, a control valve group, an analysis device and a pumping device;
the control valve group comprises a direction selecting valve, a two-position six-way valve A, a two-position seven-way valve, a two-position six-way valve B and a two-position three-way valve A which are connected in sequence;
The option valve is connected with the sampling device, the two-position seven-way valve is connected with the pumping device, the two-position three-way valve A is connected with the analysis device, and the two-position six-way valve A is also directly connected with the two-position three-way valve A;
The two-position three-way valve a is used to switch the liquid flowing into the analysis device between the two-position six-way valve B and the two-position six-way valve a.
Optionally, the direction-selecting valve comprises a plurality of input ports and output ports, and in the valve, the output ports can only be communicated with one input port at the same time;
The plurality of input ports are respectively communicated with the sampling device, the standard liquid 1 container, the standard liquid 2 container, the standard liquid 3 container and the cleaning liquid container outside the valve; the output port is connected with one inflow port of the two-position six-way valve A.
Optionally, the two-position six-way valve a includes three inflow ports and three outflow ports;
The two inflow ports are respectively connected with the carrier liquid container and one outflow port of the two-position six-way valve A except one inflow port connected with the output port of the direction selecting valve; the remaining two outflow ports are respectively connected with one inflow port of the two-position seven-way valve and one inflow port of the two-position three-way valve A.
Optionally, the two-position seven-way valve comprises four inflow ports and three outflow ports;
Besides the valve, the three remaining inflow ports are respectively connected with an acid liquid pumping device, a carrier liquid pumping device and an outflow port of the two-position seven-way valve in the pumping device except for one inflow port connected with the outflow port of the two-position six-way valve A, and the two remaining outflow ports are respectively connected with the waste liquid pumping device in the pumping device and one inflow port of the two-position six-way valve B.
Optionally, the two-position six-way valve B includes three inflow ports and three outflow ports;
Besides the valve, the other two inflow ports are respectively connected with the carrier liquid container and one outflow port of the two-position six-way valve B, and the other two outflow ports are respectively connected with the waste liquid container and one inflow port of the two-position three-way valve A.
Optionally, the two-position three-way valve a includes two inflow ports and one outflow port, and one outflow port is connected to the analysis device.
Optionally, the pipeline of the control valve group comprises a plurality of liquid storage rings for temporarily storing liquid.
Optionally, the pumping device comprises an acid liquor pumping device, a carrier liquid pumping device and a waste liquor pumping device.
Optionally, the acid liquor pumping device comprises a syringe pump B and a two-position three-way valve B, wherein the interface of the two-position three-way valve B is respectively connected with the acid liquor container, one input port of the two-position seven-way valve and the syringe pump B, when the two-position three-way valve enables the syringe pump B to be communicated with the acid liquor container, the syringe pump piston can move downwards to pump acid liquor into the syringe pump B in a pumping state; when the two-position three-way valve enables the injection pump to be communicated with one input port of the two-position seven-way valve, the piston of the injection pump B can move upwards to pump the acid liquid pumped into the injection pump B to one input port of the two-position seven-way valve in a pumping state.
Optionally, the carrier liquid pumping device comprises a syringe pump C and a two-position three-way valve C, wherein the interfaces of the two-position three-way valve C are respectively connected with the carrier liquid container, one input port of the two-position seven-way valve and the syringe pump C, so that the carrier liquid can be pumped into the syringe pump C, and then the carrier liquid can be pumped to one input port of the two-position seven-way valve.
Optionally, the waste liquid pumping device includes a syringe pump D and a two-position three-way valve D, the interface of the two-position three-way valve D is respectively connected with the waste liquid container, one output port of the two-position seven-way valve and the syringe pump D, when the two-position three-way valve D communicates the syringe pump D with one output port of the two-position seven-way valve, the syringe pump piston can move downwards in a pumping state, so that the liquid has a tendency of flowing into the syringe pump, and the liquid is pumped into the syringe pump; when the two-position three-way valve D enables the injection pump D to be communicated with the waste liquid container, the piston of the injection pump can move upwards to pump the waste liquid pumped into the injection pump D to the waste liquid container in a pumping state.
Optionally, the sampling device comprises a sampling pipeline and an electromagnetic valve, one end of the sampling pipeline is led to a loop, and the water in the loop can flow out along the sampling pipeline; the other end of the sampling pipeline is communicated with an input port of the option valve, and the electromagnetic valve is arranged on the sampling pipeline and used for controlling the on-off of the sampling pipeline;
Optionally, the analysis device comprises an inductively coupled plasma spectrometer and a peristaltic pump, and the peristaltic pump is located on a connection pipeline between the outflow port of the two-position three-way valve A and the inductively coupled plasma spectrometer and is used for conveying liquid into the inductively coupled plasma spectrometer.
The beneficial effects of the utility model are as follows:
1. the utility model can monitor the concentration of trace elements in the primary circuit water in real time and provide instant measurement results. Compared with the method of off-line sampling and laboratory analysis, the method can realize continuous monitoring and timely feedback of water quality change.
2. The utility model adopts an on-line monitoring technology, and flexibly regulates and controls the flow direction of liquid through the connection relation of each valve in the control valve group. The automatic instrument and equipment can be applied, personal errors are eliminated, and the accuracy and the repeatability of measurement are improved. By on-line monitoring, accurate measurement of low-concentration boron can be achieved by adopting a high-sensitivity sensor and an accurate titration reaction.
3. The utility model reduces manual operation and avoids the harm to the health of sampling personnel caused by a large number of repeated sampling processes.
4. The utility model can save a great deal of time and cost. The element concentration data can be rapidly obtained without sampling, transportation and laboratory analysis processes. The line monitoring technology can be integrated with an automatic control system, and when the element concentration in water exceeds a set threshold value, an alarm signal can be sent out in time or necessary control measures can be triggered automatically or staff can be reminded to take necessary manual measures in time, so that potential problems are prevented.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.
In the figure: the mutual spacing or dimensions are exaggerated for the purpose of showing the positions of the various parts, and the schematic illustrations are used for illustration only.
Fig. 1 is a schematic structural diagram of a circuit water online inductively coupled plasma spectrum monitoring system in an embodiment.
Fig. 2 is a schematic structural diagram of a first-circuit water online inductively coupled plasma spectrum monitoring system in steps (1) - (2) of a flow of a target solution analysis in a specific embodiment.
Fig. 3 is a schematic structural diagram of a loop water online inductively coupled plasma spectrum monitoring system of step (3) of the flow of the target solution analysis in the specific embodiment.
Fig. 4 is a schematic structural diagram of a loop water online inductively coupled plasma spectrum monitoring system of step (1) of the sample analysis process in an embodiment.
Fig. 5 is a schematic structural diagram of a loop water online inductively coupled plasma spectrum monitoring system of step (2) of the sample analysis process in an embodiment.
Fig. 6 is a schematic structural diagram of a loop water online inductively coupled plasma spectrum monitoring system in step (3) of a sample analysis process in an embodiment.
1, A sampling device; 11. a sampling pipeline; 12. an electromagnetic valve; 2. a control valve group; 21. a direction selecting valve; 22. a two-position six-way valve A; 23. a two-position six-way valve B; 24. two-position seven-way valve; 25. a two-position three-way valve A; 26. a liquid storage ring A; 27. a liquid storage ring C; 28. a liquid storage ring B; 3. an analysis device; 31. a peristaltic pump; 32. an inductively coupled plasma spectrometer; 4. a pumping device; 41. an acid liquid pumping device; 42. a carrier liquid pumping device; 43. and a waste liquid pumping device.
Detailed Description
The utility model will be further described with reference to the drawings and examples.
The utility model provides a primary loop water online inductively coupled plasma spectrum monitoring system, as shown in figure 1, comprising: a sampling device 1, a control valve group 2, an analysis device 3 and a pumping device 4;
The control valve group 2 comprises a direction selecting valve 21, a two-position six-way valve A22, a two-position seven-way valve 24, a two-position six-way valve B23 and a two-position three-way valve A25, and the communicating pipeline group comprises a plurality of liquid storage rings for temporary liquid storage;
The direction selecting valve 21 comprises an input port and an output port with the number ①、②、③、④、⑥, and the output port in the valve can only be communicated with one input port at the same time; the ⑥ input port is communicated with the sampling device 1; ①、②、③ And ④ input ports are respectively communicated with the standard liquid 1, the standard liquid 2, the standard liquid 3 and the cleaning liquid;
The two-position six-way valve A22 comprises a port with the number ①、②、③、④、⑤、⑥, and two communication states are included in the valve: state one: ① The port is only communicated with ⑥ ports, the ② port is only communicated with ③ ports, and the ④ port is only communicated with ⑤ ports; state two: ① The port is communicated with ② ports only, the ③ port is communicated with ④ ports only, and the ⑤ port is communicated with ⑥ ports only; outside the two-position six-way valve A22, a ① port and a ④ port are communicated through a communicating pipeline with a liquid storage ring A26, a ⑥ port is connected to an output port of the direction selecting valve 21, a ② port is communicated with an NO port of the two-position three-way valve A25, a ⑤ port is communicated with a ⑤ valve port of the two-position seven-way valve 24, and a ③ port is communicated with a liquid carrying container;
The two-position six-way valve B23 comprises an interface with the number ①、②、③、④、⑤、⑥, and two communication states are included in the valve: state three: ① The interface is only communicated with ⑥ interface, ② interface is only communicated with ③ interface, and ④ interface is only communicated with ⑤ interface; state four: ① The interface is only communicated with ② interface, ③ interface is only communicated with ④ interface, and ⑤ interface is only communicated with ⑥ interface; outside the two-position six-way valve B23, a ① interface is communicated with a carrier liquid container, a ② interface is communicated with an NC port of the two-position three-way valve A25, a ③ interface is communicated with a ⑥ interface through a communicating pipeline with a liquid storage ring B28, a ④ interface is communicated with a ⑦ central port of the two-position seven-way valve 24, and a ⑤ interface is communicated with a waste liquid container;
The two-position seven-way valve 24 comprises a valve port with the number ①、②、③、④、⑤、⑥ and a ⑦ central port, and two communication states are included in the valve: state five: ① The valve port is only communicated with the ⑥ valve port and the ⑦ central port, the ② valve port is only communicated with the ③ valve port, and the ④ valve port is only communicated with the ⑤ valve port; state six: ① The valve port is communicated with the ② valve port and the ⑦ central port, the ③ valve port is only communicated with the ④ valve port, and the ⑤ valve port is only communicated with the ⑥ valve port; outside the two-position seven-way valve 24, a ① valve port is communicated with the carrier liquid pumping device 42, a ② valve port is communicated with the acid liquid pumping device 41, a ③ valve port and a ⑥ valve port are communicated through a communicating pipeline with a liquid storage ring C27, a ④ valve port is communicated with the waste liquid pumping device 43, and a ⑦ central port is communicated with a ④ interface of the two-position six-way valve B23;
The two-position three-way valve A25 comprises an NO port, an NC port and a COM port, and two communication states are included in the valve: state seven: NC port is only communicated with COM port, state eight: the NO port is only in communication with the COM port, the COM port is in communication with the analyzer 3, the NC port is in communication with the ② port, the NO port is in communication with the ② port, and the COM port is in communication with the analyzer 3 outside the two-position three-way valve a 25.
The acid liquor pumping device 41 comprises an injection pump B and a two-position three-way valve B, wherein the interface of the two-position three-way valve B is respectively connected with an acid liquor container, a ② valve port and the injection pump B, when the two-position three-way valve B enables the injection pump B to be communicated with the acid liquor container, the piston of the injection pump B can move downwards to pump acid liquor into the injection pump B in a pumping state; when the two-position three-way valve B enables the injection pump B to be communicated with the ② valve port, the piston of the injection pump B can move upwards to pump the acid liquid pumped into the injection pump B to the ② valve port in a pumping state.
The carrier liquid pumping device 42 is substantially the same as the acid liquid pumping device 41, but the two-position three-way valve C is communicated with the carrier liquid container and the ① valve port, so that the carrier liquid can be pumped into the injection pump C, and then the carrier liquid is pumped to the ① valve port.
The waste liquid pumping device 43 has the same structure as the acid liquid pumping device 41, when the two-position three-way valve D enables the injection pump D to be communicated with the ④ valve ports, the piston of the injection pump D can move downwards to enable liquid to have a trend of flowing into the injection pump D, and the liquid is further pumped into the injection pump D; when the two-position three-way valve D enables the injection pump D to be communicated with the waste liquid container, the piston of the injection pump D can move upwards to pump the waste liquid pumped into the injection pump D to the waste liquid container in a pumping state.
The sampling device 1 comprises a sampling pipeline 11 and a solenoid valve 12, wherein one end of the sampling pipeline 11 is communicated with a loop, and water in the loop can flow out along the sampling pipeline 11; the other end of the sampling pipeline 11 is communicated with a ⑥ input port, and the electromagnetic valve 12 is arranged on the sampling pipeline 11 and used for controlling the on-off of the sampling pipeline 11;
The analysis device 3 comprises an inductively coupled plasma spectrometer 32 and a peristaltic pump 31, wherein the peristaltic pump 31 communicates a COM port with the inductively coupled plasma spectrometer 32 for delivering liquid into the inductively coupled plasma spectrometer 32 at a certain rate.
Preferably, the syringe pump is a high-precision syringe pump capable of pumping a specific volume of liquid.
Preferably, the on-off state adjustment of each valve, the up/down movement process adjustment of the injection pump piston, and the rotation speed adjustment of the peristaltic pump 31 are completed by a control system, wherein the control system comprises a control chip and a plurality of driving motors, and the driving motors are independently connected with each moving part and used for driving each moving part under the control of the control chip so as to switch or adjust the on-off state adjustment of each valve, the up/down movement process adjustment of the injection pump piston, and the rotation speed adjustment of the peristaltic pump 31.
Preferably, the control process is completed by the control chip and the driving motor (such as a singlechip), and no improvement on the existing software program is involved.
The flow of the standard liquid analysis by using the system is as follows.
(1) The ① input port of the selector valve 21 communicates with the output port as shown in fig. 2.
(2) The two-position six-way valve A22 is in a first state, and the two-position seven-way valve 24 is in a fifth state; the waste liquid pumping device 43 is in the extraction state and provides the power for the flow of the standard liquid 1, so that the standard liquid 1 is extracted, filled and temporarily stored in Chu Yehuan A26, as shown in FIG. 2;
Meanwhile, the two-position six-way valve B23 is in a state four, the two-position three-way valve A25 is in a state seven, and the peristaltic pump 31 continuously sends the carrier liquid into the inductively coupled plasma spectrometer 32, as shown in FIG. 2.
(3) The two-position six-way valve A22 is in a second state, the two-position three-way valve A25 is in a eighth state, as shown in FIG. 3, the peristaltic pump 31 sends the standard liquid 1 temporarily stored in the liquid storage ring A26 into the inductively coupled plasma spectrometer 32 for analysis and calibration;
meanwhile, the inlet and the outlet of ④ of the direction selecting valve 21 are communicated, the waste liquid pumping device 43 is in an extraction state, at this time, the two-position seven-way valve 24 is still in a state five, as shown in fig. 3, so that the cleaning liquid flows through the liquid storage ring a26 and the pipeline is flushed, and then the waste liquid pumping device 43 is switched to a pumping state, and the used cleaning liquid is discharged to the waste liquid container.
(4) And (3) the inlet and the outlet of ② of the direction selecting valve 21 are communicated, and the steps (2) - (3) are repeated to finish the calibration of the standard liquid 2.
(5) And (3) the inlet and the outlet of ③ of the direction selecting valve 21 are communicated, and the steps (2) - (3) are repeated to finish the calibration of the standard liquid 3.
(6) The inductively coupled plasma spectrometer 32 obtains three known concentration and ICP-OES signal values, and plots the working curve y=ax+b (a b is the fitting constant, X is the concentration, Y is the signal value).
Wherein the cleaning liquid is used for flushing the pipeline.
The standard liquid acts as a calibration working curve.
The carrier liquid is a mobile phase that allows for smooth transport of the sample in the pipeline.
The procedure for sample analysis using the present system is as follows.
(1) The electromagnetic valve 12 of the sampling device 1 is opened, the ⑥ input port and the output port of the direction selecting valve 21 are communicated, the two-position six-way valve A22 is in the second state, the two-position seven-way valve 24 is in the sixth state, the waste liquid pumping device 43 is in the extraction state, the power for sample flow is provided, and the sample is extracted, filled and temporarily stored in Chu Yehuan C27 as shown in fig. 4;
at the same time, the two-position three-way valve a25 is in state eight, and the carrier liquid is fed into the analysis device 3, as shown in fig. 4.
(2) The two-position seven-way valve 24 is in a state five, and the acid liquid pumping device 41 fills acid liquid into the liquid storage ring C27 to acidify the sample; the two-position six-way valve B23 is in a state four, the carrier liquid pumping device 42 is in a pumping state, and the acidified sample is pushed to enter the liquid storage ring B28, as shown in fig. 5;
Meanwhile, the inlet and the outlet of ④ of the direction selecting valve 21 are communicated, the two-position six-way valve A22 is still in the second state, the waste liquid pumping device 43 is in the pumping state, so that the cleaning liquid flows through the two-position six-way valve A22 and the cleaning pipeline, and then the waste liquid pumping device 43 is switched to the pumping state to discharge the used cleaning liquid to the waste liquid container, as shown in fig. 5;
Meanwhile, the two-position three-way valve A25 is in state seven, and the peristaltic pump 31 continuously feeds the carrier liquid into the inductively coupled plasma spectrometer 32, as shown in FIG. 5.
(3) The two-position six-way valve B23 is in a state three, the two-position three-way valve A25 is in a state seven, as shown in FIG. 6, the peristaltic pump 31 continuously sends the acidified sample in the liquid storage ring B28 into the inductively coupled plasma spectrometer 32 for analysis, and the I CP-OES signal value of the sample is obtained;
Meanwhile, the two-position six-way valve A22 is in the first state, the two-position seven-way valve 24 is in the sixth state, the inlet of ④ of the direction selecting valve 21 is still communicated with the outlet, as shown in fig. 6, the waste liquid pumping device 43 is in the extraction state, so that the cleaning liquid flows through the liquid storage ring C27 and the cleaning pipeline, and then the waste liquid pumping device 43 is switched to the pumping state, so that the used cleaning liquid is discharged to the waste liquid container.
(4) The inductively coupled plasma spectrometer 32 calculates the concentration value of the sample by substituting the ICP-OES signal value of the sample into the operation curve y=ax+b obtained in example 1.
The acid liquor is used for dissolving impurities in the primary loop water sample, improving the stability of elements in the water body and improving the reliability of analysis.
If a plurality of samples exist, the concentration values of the plurality of samples can be obtained by repeating the steps (1) - (4) by selectively introducing the samples into the idle hole position of the valve 21.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A primary loop water online inductively coupled plasma spectroscopy monitoring system, comprising: the device comprises a sampling device, a control valve group, an analysis device and a pumping device;
the control valve group comprises a direction selecting valve, a two-position six-way valve A, a two-position seven-way valve, a two-position six-way valve B and a two-position three-way valve A which are connected in sequence;
The direction selecting valve is connected with the sampling device, the two-position seven-way valve is connected with the pumping device, the two-position three-way valve A is connected with the analysis device, and the two-position six-way valve A is also directly connected with the two-position three-way valve A;
The two-position three-way valve a is used to switch the liquid flowing into the analyzer between the two-position six-way valve B and the two-position six-way valve a.
2. The on-line inductively coupled plasma optical spectrum monitoring system of claim 1 wherein said directional valve includes a plurality of input ports and output ports, said output ports being in communication with only one input port simultaneously within the valve;
The plurality of input ports are respectively communicated with the sampling device, the standard liquid 1 container, the standard liquid 2 container, the standard liquid 3 container and the cleaning liquid container outside the valve; the output port is connected with one inflow port of the two-position six-way valve A.
3. The one-circuit water on-line inductively coupled plasma spectroscopy monitoring system of claim 1 wherein said two-position six-way valve a includes three inlet ports and three outlet ports;
The two inflow ports are respectively connected with the carrier liquid container and one outflow port of the two-position six-way valve A except one inflow port connected with the output port of the direction selecting valve; the remaining two outflow ports are respectively connected with one inflow port of the two-position seven-way valve and one inflow port of the two-position three-way valve A.
4. The one-circuit water online inductively coupled plasma spectroscopy monitoring system of claim 1 wherein said two-position seven-way valve includes four inflow ports and three outflow ports;
Besides the valve, the three remaining inflow ports are respectively connected with an acid liquid pumping device, a carrier liquid pumping device and an outflow port of the two-position seven-way valve in the pumping device except one inflow port connected with an outflow port of the two-position six-way valve A, and the two remaining outflow ports are respectively connected with a waste liquid pumping device in the pumping device and one inflow port of the two-position six-way valve B.
5. The primary circuit water online inductively coupled plasma spectroscopy monitoring system of claim 1 wherein said two-position six-way valve B includes three inlet ports and three outlet ports;
The two-position seven-way valve is characterized in that the valve is arranged outside, one inflow port of the two-position seven-way valve is connected, the other two inflow ports are respectively connected with the carrier liquid container and one outflow port of the two-position six-way valve B, and the other two outflow ports are respectively connected with the waste liquid container and one inflow port of the two-position three-way valve A.
6. The on-line inductively coupled plasma optical spectrum monitoring system of claim 1 wherein the two-position three-way valve a includes two inlet ports and one outlet port, and one outlet port is connected to the analysis device.
7. The primary circuit water online inductively coupled plasma spectroscopy monitoring system of claim 1 wherein the piping of the control valve block includes a plurality of fluid storage rings for temporary storage of fluid.
8. The on-line inductively coupled plasma optical spectrum monitoring system of claim 1 wherein the pumping means includes an acid pumping means, a carrier pumping means, and a waste pumping means.
9. The on-line inductively coupled plasma optical spectrum monitoring system of claim 1 wherein said sampling device includes a sampling line and a solenoid valve, one end of the sampling line leading to a circuit along which the on-line inductively coupled plasma optical spectrum monitoring system can flow; the other end of the sampling pipeline is communicated with an input port of the option valve, and the electromagnetic valve is arranged on the sampling pipeline and used for controlling the on-off of the sampling pipeline.
10. The on-line inductively coupled plasma spectrometry monitoring system of claim 1, wherein the analysis device comprises an inductively coupled plasma spectrometer and a peristaltic pump, the peristaltic pump being positioned on a connection line between the outflow port of the two-position three-way valve a and the inductively coupled plasma spectrometer for delivering liquid into the inductively coupled plasma spectrometer.
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| CN202322775569.2U CN221056337U (en) | 2023-10-16 | 2023-10-16 | Primary loop water online inductively coupled plasma spectrum monitoring system |
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| CN202322775569.2U CN221056337U (en) | 2023-10-16 | 2023-10-16 | Primary loop water online inductively coupled plasma spectrum monitoring system |
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