CN208366698U - A kind of sample dilution device for core sampling system - Google Patents
A kind of sample dilution device for core sampling system Download PDFInfo
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- CN208366698U CN208366698U CN201821082370.4U CN201821082370U CN208366698U CN 208366698 U CN208366698 U CN 208366698U CN 201821082370 U CN201821082370 U CN 201821082370U CN 208366698 U CN208366698 U CN 208366698U
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Abstract
The utility model discloses a kind of sample dilution devices for core sampling system, including the first nitrogen inlet, diluent inlet, sample inlet, sample export and discharge outlet, further include sample amounts ring and diluent constant volume group；First nitrogen inlet connects diluent constant volume group by the first switching valve, and the diluent inlet is connected to diluent constant volume group, sample amounts ring, the sample amounts ring connection sample inlet, sample export and discharge outlet by triple valve a.The utility model makes during diluent dilute sample, the volume of diluent determines, it is high to dilute precision, staff can clearly grasp diluent ratio be added, record, analysis convenient for data, and accurate dilution ratio enables to dilution safer, will not cause damages to the staff of analysis and environment.
Description
Technical field
The utility model relates to core sampling monitoring technical fields, and in particular to a kind of sample dilution for core sampling system
Device.
Background technique
Primary Ioops water chemistry monitor and control are an important process of management of nuclear power plant, are related to entire power plant
Safe and stable and economical operation.The important means that core sampling system is realized as primary Ioops water chemistry monitor, effect is in core
Power plant acquires representative liquid or gas sample under operating condition during normal operation, after accident and accident from each process system
Product, for chemical analysis and radiochemical analysis.
When carrying out fluid sample sampling, since fluid sample has radioactivity, there are high risks, and palpus will be to be sampled
Fluid sample is analyzed after obtaining a certain amount of dilution again after product dilution, higher to operator to avoid radioactive dosage level
Member and environment cause damages.It usually is provided with sample dilution device in the core sampling system of nuclear power station, after obtaining dilution
Sample.
Currently, the core sampling system of existing nuclear power station is when being sampled dilution operation, diluent constant volume capacity is logical
Cross experience, the diluent constant volume time is judged, be unable to accurate judgement acquisition diluent amount, and then influence dilution precision,
In addition, the no agitating device of the mixing of diluent and sample causes sample mixing after the dilution finally obtained uneven, make score
Analyse result inaccuracy.
Utility model content
The purpose of this utility model is to provide a kind of sample dilution devices for core sampling system, to solve existing skill
The sample dilution device dilution precision inaccuracy of art center sampling system, diluent are analyzed caused by mixing with sample unevenly
As a result inaccurate problem.
The utility model is achieved through the following technical solutions:
A kind of sample dilution device for core sampling system, including the first nitrogen inlet, diluent inlet, sample enter
Mouth, sample export and discharge outlet, further include sample amounts ring and diluent constant volume group；First nitrogen inlet is cut by first
Valve connection diluent constant volume group is changed, the diluent inlet is connected to diluent constant volume group, sample amounts ring by triple valve a,
The sample amounts ring connection sample inlet, sample export and discharge outlet.
During using diluent dilute sample, the means generallyd use are experience according to staff, dilution
The agent constant volume time substantially judges the dilution dosage for needing to be added, and dilution precision is bad and staff can not grasp diluted ratio
Example is unfavorable for record, the analysis of data；Simultaneously as specific dilution ratio is not known, if sometimes erroneous estimation dilutes
Agent additive amount causes sample undiluted to safe coefficient hereinafter, will cause damages to staff and environment.
In order to solve the problems in the existing technology, the utility model provide it is a kind of utilize diluent constant volume group carry out
The sample dilution device of diluent constant volume.
Specifically, the sample dilution device include the first nitrogen inlet, diluent inlet, sample inlet, sample export and
Discharge outlet.Wherein, the first nitrogen inlet is compressed nitrogen, and embodiments thereof can be nitrogen cylinder or other stable source nitrogens,
First nitrogen inlet can be to sample dilution device supplying nitrogen；Diluent inlet is used for for connecting thinner container to sample
Product dilution device conveys diluent；Sample inlet is used to export the sample after dilution for being passed through sample to be diluted, sample export
Product；Discharge outlet is for being discharged the extra waste liquid generated in dilution.
Sample dilution device further includes sample amounts ring and diluent constant volume group.Wherein, sample amounts ring is for sample
Quantitative and sample is mixed with the preliminary of diluent, it is preferable that the sample amounts ring is provided with six direction changeover valves, and described six
Direction changeover valve circulation path is 6C type, i.e., there are six interface and its circulation path is c-type.The diluent constant volume group includes at least
One constant volume component, it is preferable that diluent constant volume group includes three constant volume components.
The connection relationship of above-mentioned each component is that the first nitrogen inlet passes through the first switching valve and one of diluent constant volume group
Port connection, enables constant volume component of first nitrogen inlet into diluent constant volume group to be passed through nitrogen.Three of triple valve a
Interface is separately connected diluent inlet, diluent constant volume group and sample amounts ring.Sample amounts ring connection triple valve a, sample enter
Mouth, sample export and discharge outlet.
By above-mentioned setting, between dilute sample, the volume of the constant volume component first in setting diluent constant volume group makes
Its volume meets dilution demand.Later when dilute sample, it is broadly divided into diluent constant volume and diluent and sample mixes two
Step.
Diluent constant volume: regulating three-way valve a opens diluent so that diluent inlet is connected to diluent constant volume group later
Entrance, diluent enter from diluent inlet, enter in diluent constant volume group after flowing through triple valve a, are observing that diluent is fixed
After constant volume assembly volume in appearance group has been expired, triple valve a is turned off, completes diluent constant volume.
Diluent and sample mixing: sample inlet is opened, sample to be diluted is conveyed into sample amounts ring, is opened later
First nitrogen inlet, and open the first switching valve to fill in the first nitrogen inlet connection diluent constant volume group it is dilute after constant volume
The constant volume component for releasing agent opens the compressed nitrogen gas source that the first nitrogen inlet is connected later, and nitrogen is passed through into constant volume component, then
Regulating three-way valve a, so that constant volume component and the conducting of sample amounts ring, under the promotion of nitrogen, the diluent after constant volume enters sample
It is mixed in product quantitative loop with sample to be diluted.
After the completion of mixing, the sample after dilution is exported by sample export to analysis end and carries out sample analysis.
The utility model is by above structure, so that the volume of diluent determines during diluent dilute sample,
It is high to dilute precision, staff can clearly grasp diluent ratio be added, record, analysis convenient for data, and
Accurate dilution ratio enables to dilution safer, will not cause damages to the staff of analysis and environment.
Further, first switching valve is triple valve, and the diluent constant volume group passes through the first switching valve connection row
Mouth is put, is provided with water storage relief cock on the pipeline between first switching valve and discharge outlet.Above structure constitutes dilution
Branch is discharged in agent.Specifically, three interfaces of the first switching valve are separately connected the first nitrogen inlet, diluent constant volume group and discharge
Mouthful.Meanwhile water storage relief cock is provided between the first switching valve and discharge outlet, when water storage relief cock has monitored dilution
When agent passes through, alarm signal is issued, shows that the constant volume component in diluent constant volume group at this time is already filled with diluent, constant volume is complete
At.The purpose of above-mentioned setting is, for part diluent unstable under illumination condition, usual diluent constant volume group setting
In darkroom, therefore staff can not observe the liquid level of the diluent in constant volume component, it is unclear that whether constant volume is completed.Pass through
Said mechanism, staff can judge that constant volume is complete after water storage relief cock has monitored that diluent passes through and after alarming
At, so that constant volume process is more intelligent, staff is facilitated to operate, further improves the accuracy of constant volume, it is later, extra
Diluent after water storage relief cock from discharge outlet be discharged.
Further, the water storage relief cock is that switching mode monitors flow sensor on-line.Monitor flow sensing on-line
Device is the prior art, and diluent excess flow can be exported by monitoring diluent constant volume group and in real time believes excess flow
Number send controller and feedback alarm signal to, understanding diluent in time convenient for staff, whether constant volume is completed.
Structure setting as the preferred diluent constant volume group of the utility model.The diluent constant volume group includes first fixed
Hold component, the second constant volume component and third constant volume component；It further include five direction changeover valve a and five direction changeover valve b, wherein described five
Direction changeover valve a the first constant volume of connection component, the second constant volume component, third constant volume component and triple valve a, the five direction changeover valves b
Connect the first constant volume component, the second constant volume component, third constant volume component and the first switching valve.In above-mentioned setting, the first constant volume group
The volume of part, the second constant volume component and third constant volume component three can be the same or different.Five the multiple of direction changeover valve a connect
Mouth is separately connected the first constant volume component, the second constant volume component, third constant volume component and triple valve a, five the multiple of direction changeover valve b and connects
Mouth is separately connected the first constant volume component, the second constant volume component, third constant volume component and the first switching valve.By above-mentioned setting,
In diluent constant volume process, in regulating three-way valve a, so that adjusting five logical switchings after diluent inlet connection diluent constant volume group
Valve a, so that diluent inlet is connected to the constant volume component of required volume；Similarly, it after the completion of constant volume, adjusts the first switching valve and connects
Logical first nitrogen inlet and diluent constant volume group, adjust five direction changeover valve b, so that the constant volume group that nitrogen is completed by constant volume later
Part.By above-mentioned setting, when three constant volume assembly volumes are identical, staff can be during the work time to idle constant volume
Component is replaced and is safeguarded；And when three constant volume assembly volume differences, it can be under the premise of being changed without constant volume component
The miscible of a variety of ratios being carried out, such as the volume of the first constant volume component is 100ml, the volume of the second constant volume component is 500ml, the
The volume of three constant volume components is that 1000ml is improved work efficiency so that dilution constant volume process is more flexible, succinct.
Further, the volume of the first constant volume component, the second constant volume component and third constant volume component is different.
Further, the first constant volume component, the second constant volume component and third constant volume component are rustless steel container.
As a preferred embodiment of the utility model, after diluent mixes in sample amounts ring with sample, mixing
Object will also enter mixing branch and be sufficiently mixed before being exported by sample export.Specifically, the sample amounts ring and discharge
Triple valve b is provided on pipeline between mouthful, the triple valve b is connected with mixing vessel, and the mixing vessel is cut by second
It changes valve and is connected with the second nitrogen inlet.The purpose that mixing branch is arranged is, when sometimes diluent and sample are due to mixing
Between it is shorter, mix simultaneously it is uneven, cause analysis result it is not accurate enough, therefore, it is necessary to the diluent after sample and constant volume
After mixing, introducing mixing branch is sufficiently mixed the two to export uniformly mixed dilute sample.
Below for the convenience of description, by the not sufficiently mixed mixture of the diluent exported in sample amounts ring and sample
As the first mixture, it is known as the second mixture for uniformly mixed mixture is bubbled by nitrogen.By regulating three-way valve b,
It is connected to mixing vessel and sample amounts ring, so that the first mixture is output and then enter in mixing vessel from sample amounts ring, later
The second switching valve is adjusted, the second nitrogen inlet and mixing vessel is connected to, the compressed nitrogen in the second nitrogen inlet is introduced to mixed
It closes in container, it is preferable that the end of the snorkel in mixing vessel extends in mixing vessel below the liquid level of the first mixture.Drum
After the completion of bubble, regulating three-way valve b is connected to mixing vessel and sample export, goes out so that being bubbled the second mixture completed from sample
Mouth output is to output end to be analyzed.It is avoided by above-mentioned setting so that the mixing of the diluent after sample and constant volume is abundant
When sample and poor diluent compatibility, also sufficiently dilution is just exported from sample export sample, causes to analyze result not
Accurately.
Further, second switching valve is triple valve, and the mixing vessel connects discharge outlet by the second switching valve.
By above structure, the second switching valve is connected to mixing vessel, the second nitrogen inlet and discharge outlet, and the is being passed through into mixing vessel
When one mixture, it is connected to mixing vessel and discharge outlet, so that the first mixture being more than is discharged from discharge outlet, it is preferable that
Water storage relief cock is also equipped between discharge outlet and mixing vessel to monitor spill-out, so that staff's property of can adapt to
Adjust the volume of mixing vessel.After the first mixture reaches certain liquid level in the mixing container, the second switching valve, connection are adjusted
Second nitrogen inlet and mixing vessel are to input nitrogen to mixing vessel.
Further, the volume of the mixing vessel is greater than the volume of the constant volume component in diluent constant volume group.In order to make
Having when mixing vessel has sufficiently large volume to ensure that the first mixture is bubbled mixing inside it, above liquid level enough makes gas
The space of body flowing, the volume of mixing vessel are set greater than the constant volume component in diluent constant volume group, the i.e. body of mixing vessel
Product is greater than the first constant volume component, the second constant volume component and third constant volume component.
The utility model compared with prior art, has the following advantages and benefits:
1, the utility model makes during diluent dilute sample, and the volume of diluent determines, dilution precision is high,
Staff can clearly grasp diluent ratio be added, record, analysis convenient for data, and accurate thinner ratio
Example enables to dilution safer, will not cause damages to the staff of analysis and environment；
2, the utility model is by setting water storage relief cock, so that staff can monitor to water storage relief cock
Diluent, so that constant volume process is more intelligent, facilitates staff to grasp by judging that constant volume has been completed after rear and alarm
Make, further improves the accuracy of constant volume；
3, the utility model is avoided by setting mixing branch so that the mixing of the diluent after sample and constant volume is abundant
When sample and poor diluent compatibility, also sufficiently dilution is just exported from sample export sample, causes to analyze result not
Accurately.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the utility model embodiment, constitutes the one of the application
Part does not constitute the restriction to the utility model embodiment.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of one specific embodiment of the utility model；
Fig. 2 is the structural schematic diagram of another specific embodiment of the utility model.
Label and corresponding parts title in attached drawing:
The first nitrogen inlet of 1-, 2- diluent inlet, 3- sample inlet, 4a- the first constant volume component, 4b- the second constant volume group
Part, 4c- third constant volume component, 5- sample amounts ring, the second nitrogen inlet of 6-, 7- sample export, 8- discharge outlet, 9- mixing are held
Device, 10- water storage relief cock, the first switching valve of 11-, the second switching valve of 12- triple valve a, 13- triple valve b, 14-.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, below with reference to embodiment and attached drawing,
The utility model is described in further detail, and the exemplary embodiment and its explanation of the utility model are only used for explaining this
Utility model is not intended to limit the scope of the present invention.
Embodiment 1:
A kind of sample dilution device for core sampling system as shown in Figure 1, including the first nitrogen inlet 1, diluent
Entrance 2, sample inlet 3, sample export 7 and discharge outlet 8 further include sample amounts ring 5 and diluent constant volume group；First nitrogen
Gas entrance 1 connects diluent constant volume group by the first switching valve 11, and the diluent inlet 2 is connected to dilute by triple valve a 12
Agent constant volume group, sample amounts ring 5 are released, the sample amounts ring 5 connects sample inlet 3, sample export 7 and discharge outlet 8；Described
One switching valve 11 is triple valve, and the diluent constant volume group connects discharge outlet 8, first switching valve by the first switching valve 11
Water storage relief cock 10 is provided on pipeline between 11 and discharge outlet 8；The water storage relief cock 10 is that switching mode is supervised online
Flow measurement quantity sensor；The diluent constant volume group includes the first constant volume component 4a, the second constant volume component 4b and third constant volume component
4c；It further include five direction changeover valve a and five direction changeover valve b, wherein five direction changeover valves a connection the first constant volume component 4a, second
Constant volume component 4b, third constant volume component 4c and triple valve a 12, five direction changeover valves b connection the first constant volume component 4a, second
Constant volume component 4b, third constant volume component 4c and the first switching valve 11；The first constant volume component 4a, the second constant volume component 4b and
The volume of three constant volume component 4c is different；The first constant volume component 4a, the second constant volume component 4b and third constant volume component 4c
It is rustless steel container.
Diluent constant volume: regulating three-way valve a 12 adjusts five logical switchings so that diluent inlet is connected to diluent constant volume group
Valve a adjusts five direction changeover valve b and the first switching valve 11 so that diluent inlet 2 is connected to the first constant volume component 4a, so that the
One constant volume component 4a is connected to discharge outlet 8；Diluent inlet 2 is opened later, and diluent enters from diluent inlet 2, flows through three
Enter in the first constant volume component 4a after port valve a 12, after the alarm of water storage relief cock 10, turns off triple valve a, complete diluent
Constant volume.
Diluent and sample mixing: sample inlet 3 is opened, sample to be diluted, Zhi Houkai are conveyed into sample amounts ring 5
The first nitrogen inlet 1 is opened, and adjusts the first switching valve 11 and five direction changeover valve b, so that the first nitrogen inlet 1 is connected to the first constant volume
Component 4a, backward first constant volume component 4a in be passed through nitrogen, then regulating three-way valve a 12 makes the first constant volume component 4a and sample
Product quantitative loop 5 is connected to, and under the promotion of nitrogen, the diluent after constant volume enters in sample amounts ring 5 to be mixed with sample to be diluted.
Embodiment 2:
As shown in Fig. 2, on the basis of embodiment 1, being additionally provided with mixing branch.Specifically, the sample amounts ring 5 with
Triple valve b 13 is provided on pipeline between discharge outlet 8, the triple valve b 13 is connected with mixing vessel 9, and the mixing is held
Device 9 is connected with the second nitrogen inlet 6 by the second switching valve 14；Second switching valve 14 is triple valve, the mixing vessel 9
Discharge outlet 8 is connected by the second switching valve 14；The volume of the mixing vessel 9 is greater than the constant volume component in diluent constant volume group
Volume.
By regulating three-way valve b 13, it is connected to mixing vessel 9 and sample amounts ring 5, so that the first mixture is fixed from sample
Amount ring is output and then enter in mixing vessel, adjusts the second switching valve 14 later, is connected to the second nitrogen inlet 6 and mixing vessel 9, will
Compressed nitrogen in second nitrogen inlet 6 is introduced in mixing vessel, after the completion of bubbling, regulating three-way valve b 13, and connection mixing
Container 9 and sample export 7 are exported to output end from sample export 7 to be analyzed so that being bubbled the second mixture completed.
" first " used herein, " second ", " third " etc. (such as the first constant volume component, the second constant volume component,
Three constant volume components etc.) be intended merely to description it is clear for the sake of and corresponding component is distinguished, it is not intended to limit any order or
Emphasize importance etc..
Terminology used in this article " connection " can be directly connected without illustrating, can also
So as to be indirectly connected via other component, for example, diluent inlet is connected to diluent constant volume group by triple valve a, wherein dilute
Triple valve a can be directly connected to and be directly connected to diluent constant volume group by releasing on agent entrance, be also possible in diluent inlet and three
By being connected between pipeline connection, triple valve a and diluent constant volume group by pipeline between port valve a.
Above-described specific embodiment, to the purpose of this utility model, technical scheme and beneficial effects carried out into
One step is described in detail, it should be understood that being not used to limit the foregoing is merely specific embodiment of the present utility model
Determine the protection scope of the utility model, within the spirit and principle of the utility model, any modification for being made equally is replaced
It changes, improve, should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of sample dilution device for core sampling system, including the first nitrogen inlet (1), diluent inlet (2), sample
Entrance (3), sample export (7) and discharge outlet (8), which is characterized in that further include sample amounts ring (5) and diluent constant volume group；
First nitrogen inlet (1) connects diluent constant volume group by the first switching valve (11), and the diluent inlet (2) passes through three
Port valve a (12) is connected to diluent constant volume group, sample amounts ring (5), and the sample amounts ring (5) connects sample inlet (3), sample
Product export (7) and discharge outlet (8).
2. a kind of sample dilution device for core sampling system according to claim 1, which is characterized in that described first
Switching valve (11) is triple valve, and by the first switching valve (11) connection discharge outlet (8), described first cuts the diluent constant volume group
Water storage relief cock (10) are provided on the pipeline changed between valve (11) and discharge outlet (8).
3. a kind of sample dilution device for core sampling system according to claim 2, which is characterized in that the water storage
Relief cock (10) is that switching mode monitors flow sensor on-line.
4. a kind of sample dilution device for core sampling system described in any one of claim 1 to 3, feature exist
In the diluent constant volume group includes the first constant volume component (4a), the second constant volume component (4b) and third constant volume component (4c)；Also
Including five direction changeover valve a and five direction changeover valve b, wherein five direction changeover valves a connection the first constant volume component (4a), second are determined
Appearance component (4b), third constant volume component (4c) and triple valve a (12), five direction changeover valves b connection the first constant volume component (4a),
Second constant volume component (4b), third constant volume component (4c) and the first switching valve (11).
5. a kind of sample dilution device for core sampling system according to claim 4, which is characterized in that described first
The volume of constant volume component (4a), the second constant volume component (4b) and third constant volume component (4c) is different.
6. a kind of sample dilution device for core sampling system according to claim 4, which is characterized in that described first
Constant volume component (4a), the second constant volume component (4b) and third constant volume component (4c) are rustless steel container.
7. a kind of sample dilution device for core sampling system according to claim 1, which is characterized in that the sample
It is provided on pipeline between quantitative loop (5) and discharge outlet (8) triple valve b (13), the triple valve b (13) is connected with mixing and holds
Device (9), the mixing vessel (9) are connected with the second nitrogen inlet (6) by the second switching valve (14).
8. a kind of sample dilution device for core sampling system according to claim 7, which is characterized in that described second
Switching valve (14) is triple valve, and the mixing vessel (9) passes through the second switching valve (14) connection discharge outlet (8).
9. a kind of sample dilution device for core sampling system according to claim 7, which is characterized in that the mixing
The volume of container (9) is greater than the volume of the constant volume component in diluent constant volume group.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821082370.4U CN208366698U (en) | 2018-07-09 | 2018-07-09 | A kind of sample dilution device for core sampling system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821082370.4U CN208366698U (en) | 2018-07-09 | 2018-07-09 | A kind of sample dilution device for core sampling system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110223791A (en) * | 2019-04-12 | 2019-09-10 | 中国核动力研究设计院 | A kind of core sampling system that can be used for after pressurized-water reactor nuclear power plant accident |
| CN111521477A (en) * | 2020-05-20 | 2020-08-11 | 中国科学院深海科学与工程研究所 | Dilution method of deep-sea in-situ gradient circulating dilution device |
| CN116242688A (en) * | 2023-02-16 | 2023-06-09 | 广州伊创科技股份有限公司 | Quick dilution device for online analysis |
-
2018
- 2018-07-09 CN CN201821082370.4U patent/CN208366698U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110223791A (en) * | 2019-04-12 | 2019-09-10 | 中国核动力研究设计院 | A kind of core sampling system that can be used for after pressurized-water reactor nuclear power plant accident |
| CN111521477A (en) * | 2020-05-20 | 2020-08-11 | 中国科学院深海科学与工程研究所 | Dilution method of deep-sea in-situ gradient circulating dilution device |
| CN111521477B (en) * | 2020-05-20 | 2023-02-10 | 中国科学院深海科学与工程研究所 | Dilution method of deep-sea in-situ gradient circulating dilution device |
| CN116242688A (en) * | 2023-02-16 | 2023-06-09 | 广州伊创科技股份有限公司 | Quick dilution device for online analysis |
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