CN204855444U - Novel aquatic pH's measurement device - Google Patents
Novel aquatic pH's measurement device Download PDFInfo
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- CN204855444U CN204855444U CN201520607653.6U CN201520607653U CN204855444U CN 204855444 U CN204855444 U CN 204855444U CN 201520607653 U CN201520607653 U CN 201520607653U CN 204855444 U CN204855444 U CN 204855444U
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- flow cell
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- conductance electrode
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Abstract
The utility model discloses a novel aquatic pH's measurement device, including mounting panel and changer, specific conductance electrode and flow -through cell, positive conductance electrode and flow -through cell and the cationic resin exchange bottle of setting on the mounting panel, flowmeter and shut -off valve have been connect on the inlet tube of specific conductance electrode flow -through cell, in inserting the first -class pipeline access cationic resin exchange bottle that entries from the specific conductance electrode flow -through cell, it connects out first -class outlet pipe way to insert in the zhiyang conductance electrode flow -through cell to follow cationic resin exchange bottle bottom, connect a drain pipe above positive conductance electrode flow -through cell, specific conductance electrode and positive conductance electrode respectively with changer electric connection. The utility model discloses PH measuring device adopt to calculate pH measuring principle, can eliminate interference factor's such as liquid junction potential in the low electric conductance water sample, streaming potential influence totally, can reach accuracy, stable measurement to the pH index of the low electric conductance water sample of power plant to basically, do not need to maintain, satisfy the user demand of power plant completely.
Description
Technical field
The utility model relates to and a kind ofly calculates the measurement mechanism of pH by measuring conductivity meter in water, is pH measurement mechanism in a kind of novel water.
Background technology
Measuring continuously and stably, control thermal power generation unit water-steam system pH value, is one of Main Means of control system equipment corrosion; And the conductivity of thermal power generation unit water quality usual < 10 μ S/cm, belong to low conductance water quality; Conventional pH sensor can be subject to the impact of the disturbing factor such as liquid junction potential, streaming potential in low conductance water quality, measures and produces very large error, and then produce hidden danger to power plant's safety in operation to pH.
The water quality such as the main feedwater of thermal power generation unit, condensate water and main steam, its water quality adds pH adjusting agent ammonia or amine in high purity water; For this type of water quality, by measuring it than conductivity and positive electricity conductance, pH value can be calculated; Wherein, the reflection of positive electricity conductance be the conductivity contribution of impurities in water negative ion and impurity cationic, after conductivity deduction positive electricity conductance, reflection be the conductivity contribution that ammonia or amine ionization produce, its conductivity contribution value and pH value directly related.
Utility model content
The utility model object is the measurement mechanism providing pH in a kind of new type water in order to overcome the deficiencies in the prior art, the impact of the disturbing factor such as liquid junction potential, streaming potential in low conductance water sample can be eliminated completely, accurate, stable measurement can be reached to the pH index of the low conductivity water of power plant.
Technical solution of the present utility model is achieved in that the measurement mechanism of pH in a kind of new type water, comprises installing plate and is fixedly installed transmitter on a mounting board, than conductance electrode and flow cell, positive electricity conductive electrode and flow cell thereof and cation resin exchange bottle; The described water inlet pipe be connected to than conductance electrode flow cell is connected to flowmeter and controls to enter the shutoff valve of flowmeter flow of inlet water; Access in first-class oral siphon road access cation resin exchange bottle from described than conductance electrode flow cell; Bottom described cation resin exchange bottle, pick out first-class outlet pipeline accesses in positive electricity conductive electrode flow cell; A drainpipe is connect above described positive electricity conductive electrode flow cell; Describedly to be electrically connected with described transmitter respectively than conductance electrode and positive electricity conductive electrode.
Improve further as the utility model, described cation resin exchange bottle, by joint sealing, fills an exhaust apparatus in joint.
Improve further as the utility model, describedly adopt acrylic material to make than conductance electrode flow cell and positive electricity conductive electrode flow cell.
Improve further as the utility model, load color-change resin in described cation resin exchange bottle, the material of this exchange bottle is high transparency FEP material.
Improve further as the utility model, be describedly arranged in monoblock type flow cell than conductance electrode flow cell, positive electricity conductive electrode flow cell; The flow channel needed for sample water gaging is provided with in this monoblock type flow cell.
Due to the utilization of technique scheme, the utility model compared with prior art has following advantages:
The measurement mechanism of pH in water of the present utility model, adopt computational pH measuring principle, can eliminate completely the interference of liquid junction potential, streaming potential etc. in low conductance water sample because of impact, accurate, stable measurement can be reached to the pH index of the high-purity low conductivity water of power plant, and substantially do not need to safeguard, meet the user demand of power plant completely; The structure of device and flow process are optimized, makes equipment compacter, attractive in appearance, reliable.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, technical solutions of the utility model are described further:
Accompanying drawing 1 is the structural representation of the measurement mechanism of pH in new type water of the present utility model;
Wherein: 1, installing plate; 2, transmitter; 3, than conductance electrode and flow cell thereof; 4, positive electricity conductive electrode and flow cell thereof; 5, cation resin exchange bottle; 6, water inlet pipe; 7, flowmeter; 8, shutoff valve; 9, water lines is flowed into; 10, water lines is flowed out; 11, drainpipe; 12, joint; 13, exhaust apparatus; 14, monoblock type flow cell.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described.
Be the measurement mechanism of pH in a kind of new type water as shown in Figure 1, comprise installing plate 1 and be fixedly installed on transmitter 2 on installing plate 1, than conductance electrode and flow cell 3, positive electricity conductive electrode and flow cell 4 thereof and cation resin exchange bottle 5; The described water inlet pipe 6 be connected to than conductance electrode flow cell 3 is connected to flowmeter 7 and controls to enter the shutoff valve 8 of flowmeter 7 flow of inlet water; Access in cation resin exchange bottle 5 from accessing first-class oral siphon road 9 than conductance electrode flow cell 3; Bottom described cation resin exchange bottle 5, pick out first-class outlet pipeline 10 accesses in positive electricity conductive electrode flow cell 4; A draining 11 is connect above described positive electricity conductive electrode flow cell 4; Describedly to be electrically connected with described transmitter 2 respectively than conductance electrode and positive electricity conductive electrode.
Shutoff valve 8, in order to control the flow of sample water, in conjunction with the designation data on flowmeter, can ensure the flow coincidence measurement requirement of sample water.
Cation resin exchange bottle 5, for carrying out ion-exchange to sample water; Resin in resins exchange bottle adopts color-change resin, and when efficiency lost resin, resin variable color reminds maintainer to change in time; Can the material of simultaneously bottle be high transparency FEP material, be convenient to the situation of observing efficiency lost resin; Cation resin exchange bottle 5 is sealed by joint 12, fills an exhaust apparatus 13 at joint 12 place, can automatically discharge the air leak entering cation resin exchange bottle 5, ensures the accuracy measured.
Be arranged in monoblock type flow cell 14 than conductance electrode flow cell 3, positive electricity conductive electrode flow cell 4; Be provided with the flow channel needed for sample water gaging in this monoblock type flow cell 14, the flow cell design of this structure reduces the volume of equipment, makes equipment compacter, attractive in appearance.
During measurement, first, shutoff valve 8 is opened, and according to the instruction of flowmeter 7, the openings of sizes of adjustment shutoff valve 8, flow into than in conductance electrode flow cell 3 along flow channel after making sample water enter monoblock type flow cell 14 with certain flow, now transmitter 2 can read the detection signal than conductance electrode; Sample water flows into cation resin exchange bottle 5 from inflow water lines 9, the air leaked into exchange bottle is discharged by being positioned at the exhaust apparatus 13 exchanging bottle mouth position, positive electricity conductive electrode flow cell 4 is entered from outflow water lines 10 after sample water completes sufficient ion-exchange in exchange bottle, positive electricity conductive electrode is tested the sample water in flow cell 4, and sends test data to transmitter; Finally, sample water is discharged by the drainpipe 11 on flow cell top.
Adopt acrylic material to make than conductance electrode flow cell 3 and positive electricity conductive electrode flow cell 4, user can view the mobility status of sample water, is convenient to find principal fault.
The measurement mechanism of pH in water of the present utility model, adopt calculation type pH measuring principle, the impact of the disturbing factor such as liquid junction potential, streaming potential in low conductance water sample can be eliminated completely, accurate, stable measurement can be reached to the pH index of the low conductivity water of power plant, and substantially do not need to safeguard, meet the user demand of power plant completely; The structure of device and flow process are optimized, makes equipment compacter, attractive in appearance, reliable.
Above-described embodiment is only for illustrating technical conceive of the present utility model and feature; its object is to person skilled in the art can be understood content of the present utility model and be implemented; protection domain of the present utility model can not be limited with this; all equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed in protection domain of the present utility model.
Claims (5)
1. a measurement mechanism of pH in new type water, is characterized in that: comprise installing plate and be fixedly installed transmitter on a mounting board, than conductance electrode and flow cell, positive electricity conductive electrode and flow cell thereof and cation resin exchange bottle; The described water inlet pipe be connected to than conductance electrode flow cell is connected to flowmeter and controls to enter the shutoff valve of flowmeter flow of inlet water; Access in first-class oral siphon road access cation resin exchange bottle from described than conductance electrode flow cell; Bottom described cation resin exchange bottle, pick out first-class outlet pipeline accesses in positive electricity conductive electrode flow cell; A drainpipe is connect above described positive electricity conductive electrode flow cell; Describedly to be electrically connected with described transmitter respectively than conductance electrode and positive electricity conductive electrode.
2. the measurement mechanism of pH in new type water according to claim 1, is characterized in that: described cation resin exchange bottle, by joint sealing, fills an exhaust apparatus in joint.
3. the measurement mechanism of pH in new type water according to claim 1 and 2, is characterized in that: describedly adopt acrylic material to make than conductance electrode flow cell and positive electricity conductive electrode flow cell.
4. the measurement mechanism of pH in new type water according to claim 1 and 2, is characterized in that: load color-change resin in described cation resin exchange bottle, the material of this exchange bottle is high transparency FEP material.
5. the measurement mechanism of pH in new type water according to claim 3, is characterized in that: be describedly arranged in monoblock type flow cell than conductance electrode flow cell, positive electricity conductive electrode flow cell; The flow channel needed for sample water gaging is provided with in this monoblock type flow cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520607653.6U CN204855444U (en) | 2015-08-12 | 2015-08-12 | Novel aquatic pH's measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520607653.6U CN204855444U (en) | 2015-08-12 | 2015-08-12 | Novel aquatic pH's measurement device |
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| Publication Number | Publication Date |
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| CN204855444U true CN204855444U (en) | 2015-12-09 |
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| CN201520607653.6U Active CN204855444U (en) | 2015-08-12 | 2015-08-12 | Novel aquatic pH's measurement device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758890A (en) * | 2016-02-03 | 2016-07-13 | 浙江恒达仪器仪表股份有限公司 | Online rainfall monitoring system and online rainfall monitoring method |
| CN110441377A (en) * | 2019-08-23 | 2019-11-12 | 常州罗盘星检测科技有限公司 | A kind of flow cell |
-
2015
- 2015-08-12 CN CN201520607653.6U patent/CN204855444U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758890A (en) * | 2016-02-03 | 2016-07-13 | 浙江恒达仪器仪表股份有限公司 | Online rainfall monitoring system and online rainfall monitoring method |
| CN110441377A (en) * | 2019-08-23 | 2019-11-12 | 常州罗盘星检测科技有限公司 | A kind of flow cell |
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