CN2558990Y - Pre-complexation and post-complexation conductance difference type softener outlet water hardness monitor - Google Patents
Pre-complexation and post-complexation conductance difference type softener outlet water hardness monitor Download PDFInfo
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- CN2558990Y CN2558990Y CN 02229346 CN02229346U CN2558990Y CN 2558990 Y CN2558990 Y CN 2558990Y CN 02229346 CN02229346 CN 02229346 CN 02229346 U CN02229346 U CN 02229346U CN 2558990 Y CN2558990 Y CN 2558990Y
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- water
- water sample
- hardness
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- demineralizer
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Abstract
The utility model relates to a water out hardness monitoring instrument of a demineralizer, after a water sample firstly flows across an electrical conduction electrode battery, complexing agent with fixed concentration is added thereof in a scaling way, and then the water sample flows across the other electrical conduction electrode battery. The amount of the complexing agent is slightly more than the amount of water out hardness when the complexing demineralizer is ineffective. An electric signal detector displays the water out hardness of the demineralizer according to the change of a specific value and a difference value measured by the two electrical conduction electrodes. A sodium ion exchange column can be connected in parallel on a pipeline in the front of the former electrical conduction electrode battery, to lead the switch of the water sample to passing through, to generate zero hardness water to adjust the instrument hardness to zero. The instrument can be used for the on-line monitoring to the hardness of the demineralizer water out or the other low hardness water.
Description
The utility model belongs to water analysis chemistry and water-treatment technology field.
Sodion exchange is softening be use water technology very widely.For fill up to demineralizer go out water hardness real time on-line monitoring blank, satisfy the demand of users to this on-line monitoring, calendar year 2001 has " electric conductivity difference type demineralizer water outlet hardness detecting instrument " utility model patent (patent No.: 01 2 40023.8) come out.
The purpose of this utility model is, use the principle of above-mentioned utility model patent, provide that demineralizer more perfect and that be different from above-mentioned utility model patent goes out water hardness on-line monitoring instrument on a kind of structure, go out the failure criteria that the water hardness has reached regulation so that can in time judge demineralizer.This instrument also can be used for the on-line monitoring to the stable soft of other salt content (as less than the 1mmol/L) water hardness.
The utility model mainly interconnects institute by conductance electrode pond, electric signal detecting device, the molten storage tank of complexing agent, pipeline and various pipe element and constitutes.
Accompanying drawing 1 is a structural representation of the present utility model.
In the accompanying drawing 1, water sampling pipe 1 with room temperature heat exchanger tube 2, micro-filtration and bubble stripper 3, flow to transfer valve 4, water sample constant current amount device 7, water sample flowmeter 8, water sample and the water wing passage of complexing agent equality of temperature heat interchanger 9, former water sample conductance electrode pond 10, water sample and enveloping agent solution mixer 17, add behind the complexing agent water sample conductance electrode pond 12 etc. and be connected in series successively by pipeline; Enveloping agent solution storage tank 13 is connected in series successively with complexing agent wing passage, water and the enveloping agent solution mixer 17 etc. of enveloping agent solution constant current amount device 14, enveloping agent solution flowmeter 15, water sample and complexing agent equality of temperature heat interchanger 9; Two conductance electrode ponds 10 are connected with electric signal detecting device 11 by lead with 12.
In the accompanying drawing 1, flow to transfer valve 4 and can be installed in water sampling pipe 1 to the passage between the water sample constant current amount device 7, or be installed in water sample constant current amount device 7 to the passage between the former water sample conductance electrode pond 10.Flow to two outlets of transfer valve 4, one directly is connected with the downstream line that flows to one of above-mentioned two sections passages in transfer valve 4 places, another outlet is connected with the water inlet pipe of a small-sized sodion exchange column 5, the outlet of this exchange column 5 is connected with the downstream line of one of above-mentioned two sections passages that flow to transfer valve 4 places through flow control valve 6.The water inlet pipe of small-sized sodion exchange column 5 also can be connected with other water supply container or pipeline, and is not connected with one of above-mentioned two sections passages, in the case, can not establish on above-mentioned passage and flow to transfer valve 4.
In the accompanying drawing 1, room temperature heat exchanger tube 2, micro-filtration and bubble stripper 3, water sample and complexing agent equality of temperature heat exchanger tube 9 etc. are not the members that must have, and their positions separately also can be changed in the upstream passageway in former water sample conductance electrode pond 10.In two conductance electrode ponds 10,12, all be provided with under the situation of temperature compensating electrode, can establish room temperature heat exchanger tube 2 and water sample and complexing agent equality of temperature replace tubes 9.
In the accompanying drawing 1, water sample flowmeter 8 can be installed on any pipeline section of water sample constant current amount device 7 drainpipe after the water sample conductance electrode pond 12 after adding complexing agent; Enveloping agent solution flowmeter 15 can be installed on enveloping agent solution constant current amount device 14 to any pipeline section between water sample and the enveloping agent solution mixer 17.
In the accompanying drawing 1, water sample and enveloping agent solution constant current amount device 7 and 14 can be the constant level head tanks of carry potential overflow, also can be other devices such as miniature volume pump.So under latter event, water sample and enveloping agent solution flowmeter 8 and 15 also differ, and to establish a capital be necessary.If enveloping agent solution constant current amount device 14 is constant level head tanks of carry potential overflow, an overflow enveloping agent solution returnable bottle 16 can be set.
Flow process during this instrument operate as normal is divided into three the tunnel, i.e. water sample flow process, enveloping agent solution flow process and circuit.The water sample flow process is: the demineralizer water outlet is entered the water sample passage of instrument by water sampling pipe 1, the room temperature of flowing through earlier heat exchanger tube 2, so that TWS is close with the environment temperature of instrument as far as possible, pass through micro-filtration and bubble stripper 3 again, removing the contaminant particles that may exist in the water sample and because the bubble that water sample pressure descends or temperature rises and separates out, if these impurity or bubble all can cause flow to indicate or the deviation of conductance measurement value attached to flowmeter passage or conductance electrode surface.Then water sample is flowed through behind the water sample constant current amount device 7 downstream, with constant flow further flow through water sample flowmeter 8 and water sample and complexing agent equality of temperature heat interchanger 9, the effect of this equality of temperature heat interchanger, be to make the temperature of water sample and the temperature that has the enveloping agent solution of instrument environment temperature, before by two conductance electrode ponds 10 and 12, reach more approaching.After water sample is flowed out by equality of temperature heat interchanger 9, the former water sample conductance electrode pond 10 of flowing through earlier, flow through again water sample and enveloping agent solution mixer 17, water sample is with after the enveloping agent solution of the fixed concentration that adds in the predetermined amount of flow ratio mixes there, and continuing flows through forward adds water sample conductance electrode pond 12 back discharges behind the complexing agent.
The enveloping agent solution flow process is: complexing agent (as the EDTA) solution that the fixed concentration of confessing in a period of time (8 hours, one day or two days etc.) is housed in the enveloping agent solution storage tank 13 enough, the enveloping agent solution that is flowed out by this storage tank is flowed through behind the enveloping agent solution constant current amount device 14, flow into water sample and enveloping agent solution mixers 17 with constant flow continue to flow through enveloping agent solution flowmeter 15, water sample and complexing agent equality of temperature heat interchanger 9 backs, after mixing with water sample there, flowing through at last adds water sample conductance electrode pond 12 behind the complexing agent.
Circuit is: two conductance electrode ponds 10 all are connected with electric signal detecting device 11 with 12 measurement lead.
The flow process of carrying out water sample hardness when operation indication zeroing water sample in instrument is: to flow to that transfer valve 4 is positioned on the position that is right after after micro-filtration and bubble stripper 3 is example, flow to the water sample of transfer valve 4 by water sampling pipe 1, its flow direction is switched on the water inlet pipe of small-sized sodion exchange column 5 by transfer valve 4, make the sodium type resinbed of aqueous sample stream through thoroughly regenerating, and flow out with the softening water of zero hardness, after flowing through flow control valve 6 again, inflow flows in the pipeline between transfer valve 4 and the water sample constant current amount device 7, and this pipeline following above-mentioned water sample flow process then continues to flow through.
The principle of work of this instrument monitoring water sample hardness is: do not have in the demineralizer water outlet under the situation of hardness, perhaps after the demineralizer water outlet enters the water sampling pipe, under the situation of the water sample flow process when having flowed through the zero adjusting operation (water sample flowed through again small-sized sodion exchange column 5), thereby make the water that enters former water sample conductance electrode pond 10 not have calcium fully, during magnesium ion, then after this, after the complexing agent that in water sample, has added fixed proportion (as EDTA) solution, complexing agent in the water sample can remain not complex status, at this moment, two electric conductivity values that former water sample conductance electrode pond 10 is measured with adding water sample conductance electrode pond behind the complexing agent 12 have a fixing ratio (or algebraic value of difference).And when hardness being arranged and in the demineralizer water outlet after its water sample enters water sampling pipe 1, during water sample flow process during the instrument operate as normal of having flowed through, because in the water after water sample and enveloping agent solution mixer 17, complexing has taken place in the calcium in the water sample, magnesium ion and complexing agent, and the conductive ion amount that adds when making wherein conductive ion amount than zero hardness water behind the complexing agent reduces, thereby the ratio (or algebraic value of difference) of former water sample conductance electrode pond 10 two electric conductivity values measured with adding water sample conductance electrode pond behind the complexing agent 12 is risen to some extent.The hardness of demineralizer water outlet water sample is high more, and above-mentioned two conductance ratio values (or algebraic value of difference) can rise manyly more.Demineralizer influent quality and water temperature stability, and the not high situation of water sample hardness number under, variation of this ratio (or algebraic value of difference) and the hardness number in the water sample have approximate linear, therefore can be shown by the hardness of electric signal detecting device with water sample according to this ratio (or algebraic value of difference).
According to above-mentioned principle of work as can be known, when bigger change takes place water sample water quality, should in time carry out the zeroing operation of instrument indication.In addition, in order to reduce the error that the water sample variation water quality causes as far as possible, add the concentration of enveloping agent solution close being advisable so that its conductivity and the water sample conductivity under same temperature is tried one's best, but and institute's amount of adding complexing agent amount of going out the water hardness when being a bit larger tham the inefficacy of complexing demineralizer be advisable.If be used to monitor the soft water hardness, add complexing agent amount be advisable with the amount of being a bit larger tham the highest hardness that may occur.
With concrete implementation data is example.The Wuhan tap water that the water intaking temperature is 20 ℃ is a water sample, adopt the utility model that the water hardness that goes out of demineralizer is carried out on-line monitoring, go out the water hardness as the regulation demineralizer and reach 0.2mmol/L for losing efficacy, in water sample and enveloping agent solution mixer 17, be that to add concentration be the EDTA solution of 2.42mmol/L for 100: 9 ratio with water sample and enveloping agent solution volume ratio.When demineralizer went out the water hardness and is zero, former water sample conductivity was 222us/cm, added that the water sample conductivity is 224us/cm behind the complexing agent, and the two ratio of front and back is 0.99, and the two difference of front and back is-2us/cm; When demineralizer goes out the water hardness and reaches 0.2mmol/L, former water sample conductivity with add that the ratio of water sample conductivity rises to 1.06 behind the complexing agent, the difference of the two rises to 12us/cm.
The registration of this instrument lags behind, and the length of water sample flow process when looking the instrument operate as normal is about 2～4 minutes.
Demineralizer water inlet salt content not high (as less than 4mmol/L), influent quality is basicly stable and the condition of water sample hardness greater than 0.025mmol/L under, the error at measurment of this instrument can be less than ± 15%.
Claims (3)
1. one kind by the water sampling pipe, the room temperature heat exchanger tube, micro-filtration and bubble stripper, flow to transfer valve, the enveloping agent solution storage tank, water and enveloping agent solution constant current amount device, water and enveloping agent solution flowmeter, water sample and complexing agent equality of temperature heat interchanger, water sample and enveloping agent solution mixer, the conductance electrode pond, electric conductivity difference type demineralizer went out water hardness monitor before and after electric signal detecting device and small-sized sodion exchange column etc. interconnected the complexing that is constituted with pipeline or lead etc., it is characterized in that: former water sample conductance electrode pond 10, water sample and enveloping agent solution mixer 17, water sample conductance electrode pond three devices such as 12 grades are connected in series successively by pipeline after adding complexing agent.
2. electric conductivity difference type demineralizer goes out water hardness monitor before and after the complexing as claimed in claim 1, it is characterized in that: at water sampling pipe 1 to the water sample passage between the water sample constant current amount device 7, or at water sample constant current amount device 7 to the water sample passage in former water sample conductance electrode pond 10, can install and flow to transfer valve 4.Flow to two outlets of transfer valve 4, one directly is connected with the downstream line that flows to one of above-mentioned two sections water sample passages in transfer valve 4 places, another outlet is connected with the water inlet pipe of a small-sized sodion exchange column 5, the outlet of this exchange column 5 is connected by the downstream line of pipeline with one of above-mentioned two sections water sample passages that flow to transfer valve 4 places through flow control valve 6.
3. go out water hardness monitor as electric conductivity difference type demineralizer before and after claim 1 and the described complexing of claim 2, it is characterized in that: the water inlet pipe of small-sized sodion exchange column 5, also can be connected with other water supply container or pipeline, and be not connected with one of described two sections passages of claim 2, in the case, on this passage, can not establish and flow to transfer valve 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02229346 CN2558990Y (en) | 2002-05-10 | 2002-05-10 | Pre-complexation and post-complexation conductance difference type softener outlet water hardness monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02229346 CN2558990Y (en) | 2002-05-10 | 2002-05-10 | Pre-complexation and post-complexation conductance difference type softener outlet water hardness monitor |
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| Publication Number | Publication Date |
|---|---|
| CN2558990Y true CN2558990Y (en) | 2003-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 02229346 Expired - Fee Related CN2558990Y (en) | 2002-05-10 | 2002-05-10 | Pre-complexation and post-complexation conductance difference type softener outlet water hardness monitor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104583772A (en) * | 2012-07-05 | 2015-04-29 | 布丽塔有限责任公司 | Determination of a conversion factor relating the conductivity and the hardness of water |
| CN104620105A (en) * | 2012-08-29 | 2015-05-13 | 布丽塔有限责任公司 | Processing data obtained by operating a liquid treatment system |
| WO2023010804A1 (en) * | 2021-08-03 | 2023-02-09 | 佛山市云米电器科技有限公司 | Water sample characteristic detection method and apparatus |
-
2002
- 2002-05-10 CN CN 02229346 patent/CN2558990Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104583772A (en) * | 2012-07-05 | 2015-04-29 | 布丽塔有限责任公司 | Determination of a conversion factor relating the conductivity and the hardness of water |
| CN104620105A (en) * | 2012-08-29 | 2015-05-13 | 布丽塔有限责任公司 | Processing data obtained by operating a liquid treatment system |
| WO2023010804A1 (en) * | 2021-08-03 | 2023-02-09 | 佛山市云米电器科技有限公司 | Water sample characteristic detection method and apparatus |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |