CN104730178B - The online chromatography of ions in situ detection of full-automatic high-pressure water supply line takes, sampling device - Google Patents
The online chromatography of ions in situ detection of full-automatic high-pressure water supply line takes, sampling device Download PDFInfo
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- CN104730178B CN104730178B CN201510113025.7A CN201510113025A CN104730178B CN 104730178 B CN104730178 B CN 104730178B CN 201510113025 A CN201510113025 A CN 201510113025A CN 104730178 B CN104730178 B CN 104730178B
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Abstract
The invention discloses the online chromatography of ions in situ detection of a kind of full-automatic high-pressure water supply line to take, sampling device, include air relief valve, tangential flow ultra-filtration unit, sampling panel, air relief valve is arranged on the water supply line between tap water main pipeline and tangential flow ultra-filtration unit, sewer pipe is connected on the upper end sidewall of tangential flow ultra-filtration unit, the lower end of tangential flow ultra-filtration unit connects receiving flask by water supply line, the top of receiving flask is placed with photoelectric liquid level sensor, the lower end of receiving flask is connected with the injection valve on ion chromatograph main frame by sampling tube, peristaltic pump it is additionally provided with on sampling tube；Sampling panel electrically connects with air relief valve, photoelectric liquid level sensor, peristaltic pump, ion chromatograph main frame by controlling circuit.The present invention is substantially reduced the pipeline impurities in water probability to the blocking of chromatographic column, also significantly reduces the operation and maintenance cost of ion chromatograph while reducing the maintenance period of the online in situ detection of online ion chromatograph.
Description
Technical field
The present invention relates to the online chromatography of ions in situ detection of a kind of full-automatic high-pressure water supply line take, sampling device, mainly it is adapted to the online chromatography of ions detection field in situ of high service pipeline, is a kind of to collect on-line period, purification, the integrating device of ion chromatograph sample introduction.
Background technology
Chromatography of ions is a branch of liquid chromatograph, it is mainly used in the detection of ionic state compound, chromatography of ions is mainly used for the detection of inorganic anion at present, it is advantageous that can complete different kinds of ions separates and detection simultaneously, detection sensitivity is higher, can meet the detection demand in different fields.Ion chromatographic separation post is ion chromatography core component, and the inserts of detached dowel is generally the scion grafting functionalization spherical resin particle of 5-10um, and resin particle is typically sealed in cylindrical tube by the two ends of particles filled post with the inertia sieve plate of 0.22um.When ion chromatograph normally works, the operating pressure of ion chromatography system is generally 3-17MPa, and too high post pressure can affect the chromatogram pump life-span and analyze the stability of detection.Recently as the raising of drinking water safety demand, and the repeatedly generation of drinking water safety accident, cause potable water network online precision monitor demand strongly.Ion chromatograph is one of important instrument of Drinking Water water quality detection, its requirement to sample degree of purity single, hinders ion chromatograph and uses carrying out of work online.How solving sample in-line purification is one of key issue of using online of ion chromatograph.
Summary of the invention
The invention aims to solve above-mentioned technical problem, offer can effectively realize the online chromatography of ions in situ detection of high service pipeline take, sampling device, maintenance period and the operation and maintenance cost of ion chromatograph that ion chromatograph uses online can be substantially reduced simultaneously.
The technical solution used in the present invention is:
The online chromatography of ions in situ detection of a kind of full-automatic high-pressure water supply line takes, sampling device, it is characterized in that: include air relief valve, tangential flow ultra-filtration unit, sampling panel, air relief valve is arranged on the water supply line between tap water main pipeline and tangential flow ultra-filtration unit, sewer pipe is connected on the upper end sidewall of tangential flow ultra-filtration unit, the lower end of tangential flow ultra-filtration unit connects receiving flask by water supply line, the top of receiving flask is placed with photoelectric liquid level sensor, the lower end of receiving flask is connected with the injection valve on ion chromatograph main frame by sampling tube, peristaltic pump it is additionally provided with on sampling tube；Sampling panel electrically connects with air relief valve, photoelectric liquid level sensor, peristaltic pump, ion chromatograph main frame by controlling circuit.
The online chromatography of ions in situ detection of described full-automatic high-pressure water supply line takes, sampling device, it is characterized in that: described tangential flow ultra-filtration unit includes ultrafiltration housing, ultrafiltration housing has been horizontally disposed with ultrafilter membrane, the side of ultrafiltration housing is provided with water inlet, opposite side connects with sewer pipe, water (flow) direction is parallel with ultrafilter membrane, it is achieved realize the cleaning of ultrafiltration membrane surface while ultrafiltration；The lower end of ultrafiltration housing is provided with receiving flask interface, current direction receiving flask interface after ultrafiltration.
After injection valve in ion chromatograph main frame enters to go to sample introduction position, utilize peristaltic pump by current water sample injected system, and with current water sample as cleanout fluid flushing line, it is to avoid last time sample introduction residual interference.
The invention have the advantage that
The present invention can effectively realize the online chromatography of ions in situ detection sampling of high service pipeline and sample introduction, it is substantially reduced the pipeline impurities in water probability to the blocking of chromatographic column, reduce the maintenance period of the online in situ detection of online ion chromatograph, the tangential flow ultra-filtration unit simultaneously used effectively realizes ultrafiltration and the cleaning of self of water sample, also significantly reduces the operation and maintenance cost of ion chromatograph while reducing maintenance period.
Accompanying drawing explanation
Fig. 1 is the principle schematic of apparatus of the present invention.
Fig. 2 is the schematic diagram of tangential flow ultra-filtration unit.
Detailed description of the invention
As shown in Figure 1, the online chromatography of ions in situ detection of a kind of full-automatic high-pressure water supply line takes, sampling device, include air relief valve 2, tangential flow ultra-filtration unit 3, sampling panel 4, air relief valve 2 is arranged on the water supply line between tap water main pipeline 1 and tangential flow ultra-filtration unit 3, sewer pipe 6 is connected on the upper end sidewall of tangential flow ultra-filtration unit 3, the lower end of tangential flow ultra-filtration unit 3 connects receiving flask 12 by water supply line, the top of receiving flask 12 is placed with photoelectric liquid level sensor 11, the lower end of receiving flask 12 is connected with the injection valve 8 on ion chromatograph main frame 7 by sampling tube 10, peristaltic pump 9 it is additionally provided with on sampling tube 10；Sampling panel 4 electrically connects with air relief valve 2, photoelectric liquid level sensor 11, peristaltic pump 9, ion chromatograph main frame 7 by controlling circuit 5.
As shown in Figure 2, tangential flow ultra-filtration unit 3 includes ultrafiltration housing 14, ultrafiltration housing 14 has been horizontally disposed with ultrafilter membrane 13, the side of ultrafiltration housing 14 is provided with water inlet 17, opposite side connects with sewer pipe 6, water (flow) direction is parallel with ultrafilter membrane 13, it is achieved realize the cleaning on ultrafilter membrane 13 surface while ultrafiltration；The lower end of ultrafiltration housing 14 is provided with receiving flask interface 16, and after ultrafiltration, water 15 flows to receiving flask interface 16.
Embodiment
1, ion chromatograph main frame 7 completes current sample analysis, enters idle condition and notifies to sample panel 4 simultaneously, and sampler enters sampling state.
2, the control of sampling panel 4 is opened air relief valve 2 and tap water is introduced sampler, tap water flows to tangential flow ultra-filtration unit 3, carry out online ultrafiltration, the dense water that ultrafiltration produces containing various granule foreigns discharges system through sewer pipe 6, water after ultrafiltration enters receiving flask 12 through receiving flask interface 16, and the most constantly accumulates.
3, when the liquid level of receiving flask 12 arrives the position of photoelectric liquid level sensor 11, sampling panel 4 starts peristaltic pump 9, peristaltic pump 9 starts to rinse sample introduction pipeline with preset flow rate, sample flows through the quantitative loop of injection valve 8, sampling panel 4 after arriving Preset Time, notice ion chromatograph main frame 7 can realize sample feeding with switch sampling valve 8.
4, after injection valve 8 switching, sampling panel 4 controls to close air relief valve 2, and now peristaltic pump 9 works on remaining liquid discharge system in receiving flask 12.
5, pump trip after the residue water sample of receiving flask is got rid of in Preset Time by peristaltic pump 9, whole sampler enters idle condition, waits that ion chromatograph main frame 7 completes current sample analysis, enters idle condition and restarts the sampling sample introduction work of a new round.
Claims (2)
1. a full-automatic high-pressure water supply line online chromatography of ions in situ detection takes, sampling device, it is characterized in that: include air relief valve, tangential flow ultra-filtration unit, sampling panel, air relief valve is arranged on the water supply line between tap water main pipeline and tangential flow ultra-filtration unit, sewer pipe is connected on the upper end sidewall of tangential flow ultra-filtration unit, the lower end of tangential flow ultra-filtration unit connects receiving flask by water supply line, the top of receiving flask is placed with photoelectric liquid level sensor, the lower end of receiving flask is connected with the injection valve on ion chromatograph main frame by sampling tube, peristaltic pump it is additionally provided with on sampling tube；Sampling panel electrically connects with air relief valve, photoelectric liquid level sensor, peristaltic pump, ion chromatograph main frame by controlling circuit.
Full-automatic high-pressure water supply line the most according to claim 1 online chromatography of ions in situ detection takes, sampling device, it is characterized in that: described tangential flow ultra-filtration unit includes ultrafiltration housing, ultrafiltration housing has been horizontally disposed with ultrafilter membrane, the side of ultrafiltration housing is provided with water inlet, opposite side connects with sewer pipe, water (flow) direction is parallel with ultrafilter membrane, and the lower end of ultrafiltration housing is provided with receiving flask interface.
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| CN201510113025.7A CN104730178B (en) | 2015-03-13 | 2015-03-13 | The online chromatography of ions in situ detection of full-automatic high-pressure water supply line takes, sampling device |
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| CN104730178B true CN104730178B (en) | 2016-10-19 |
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| EP1501369B1 (en) * | 2002-04-26 | 2015-06-24 | Genentech, Inc. | Non-affinity purification of proteins |
| US9290826B2 (en) * | 2007-12-20 | 2016-03-22 | Chevron U.S.A. Inc. | Heavy oil upgrade process including recovery of spent catalyst |
| JP6322882B2 (en) * | 2012-03-30 | 2018-05-16 | 栗田工業株式会社 | Pretreatment device for online measurement in water system, online measurement device using the pretreatment device for online measurement, pretreatment method in online measurement, and online measurement method using the pretreatment method |
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| CN103969388A (en) * | 2014-05-13 | 2014-08-06 | 力合科技（湖南）股份有限公司 | Online perchlorate monitoring system |
| CN203965275U (en) * | 2014-06-30 | 2014-11-26 | 北京永兴精佳仪器有限公司 | A kind of system of online detection crude oil |
| CN104198749A (en) * | 2014-09-11 | 2014-12-10 | 天俱时工程科技集团有限公司 | Mounting method of sampling pipeline for online real-time detection of online analysis instrument |
| CN204514880U (en) * | 2015-03-13 | 2015-07-29 | 安徽皖仪科技股份有限公司 | The online original position chromatography of ions detection of full-automatic high-pressure water supply line is got, sampling device |
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Address after: High tech Zone Wenqu 230088 Hefei Road, Anhui province No. 8 Patentee after: ANHUI WANYI SCIENCE & TECHNOLOGY Co.,Ltd. Address before: Tianda high tech Zone 230088 Hefei Road, Anhui province No. 71 Huayi Science Park building B building Anhui instrument Patentee before: ANHUI WANYI SCIENCE & TECHNOLOGY Co.,Ltd. |