CN2550760Y - PH valve reference electrode for on-line monitoring high temperature, high pressure environment fluid - Google Patents
PH valve reference electrode for on-line monitoring high temperature, high pressure environment fluid Download PDFInfo
- Publication number
- CN2550760Y CN2550760Y CN 02274026 CN02274026U CN2550760Y CN 2550760 Y CN2550760 Y CN 2550760Y CN 02274026 CN02274026 CN 02274026 CN 02274026 U CN02274026 U CN 02274026U CN 2550760 Y CN2550760 Y CN 2550760Y
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- China
- Prior art keywords
- ring
- pipe
- electrode
- high temperature
- protective casing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000012530 fluid Substances 0.000 title claims abstract description 16
- 238000012544 monitoring process Methods 0.000 title claims abstract description 10
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000919 ceramic Substances 0.000 claims abstract description 15
- 239000012088 reference solution Substances 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 230000001681 protective effect Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 11
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 5
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 4
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 4
- WAIPAZQMEIHHTJ-UHFFFAOYSA-N [Cr].[Co] Chemical compound [Cr].[Co] WAIPAZQMEIHHTJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 229910021607 Silver chloride Inorganic materials 0.000 description 7
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 7
- 239000000843 powder Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 229910001233 yttria-stabilized zirconia Inorganic materials 0.000 description 4
- 239000004809 Teflon Substances 0.000 description 3
- 229920006362 Teflon® Polymers 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000009284 supercritical water oxidation Methods 0.000 description 2
- 239000012085 test solution Substances 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to a reference electrode for online monitoring the fluid pH value in high temperature and high pressure environment, belonging to the environmental protection monitoring technology, which comprises a wire electrode, a plurality of inner tubes, a plurality of outer tubes, and a seal chuck, wherein, the upper end of the inner tube is sealed with zirconia adhesive; the wire electrode wrapped in an electrode protecting tube is inserted in a ceramic inner tube; the bottom end of the wire electrode is exposed in the inner tube; the outer tube and a protecting sleeve are sleeved outside the ceramic inner tube; a cooling device is arranged at the outer wall of the protecting sleeve; a connecting tube is arranged between the outer tube and the protecting sleeve; one end of the protecting sleeve is in thread connection with a seal chuck; the reference solution is injected in the protecting sleeve, and then the protecting sleeve is inserted in the ceramic inner tube through a capillary. The utility model has the advantages of high testing precision and wide work temperature range.
Description
Technical field
The utility model relates to the environment monitoring technology, specifically a kind of contrast electrode that is used for on-line monitoring high temperature and high pressure environment fluid pH value.
Background technology
In the prior art, generally employed common Ag/AgCl contrast electrode, its structure is very simple, is the Ag wire electrode of an electroplating surface AgCl, during use wire electrode one end is directly inserted test solution, the other end then directly is electrically connected with surveying instrument such as pot and gets final product.But when changing the work on the spot environment as if fluid (as the working fluid of cogeneration plant, nuclear power plant, the supercritical water oxidation waste treatment plant etc.) potential of hydrogen that is applied to monitor in the environmental protection field high temperature, high pressure, there are two shortcomings in this common Ag/AgCl contrast electrode:
1. though can satisfy the high temperature service condition, because no high pressure seal, thereby can't guarantee the high pressure service condition of work on the spot, test environment.
2. when working in the fluid environment of high temperature, high pressure owing to common Ag/AgCl contrast electrode, directly contact, can't guarantee that contrast electrode is in stable solution environmental with the on-the-spot solution that changes that flows, thereby the reference potential instability, cause the error of measurement result bigger, insincere.
Thereby press for development at present can be at high temperature, hyperbaric environment midium or long term, reliable, the accurate contrast electrode of work.
The utility model content
The purpose of this utility model provides a kind of to test environment is noiseless, pollution-free, measuring accuracy is high, operating temperature range is wide, be used for on-line monitoring high temperature, hyperbaric environment fluid pH value contrast electrode.
To achieve these goals, the technical solution of the utility model is: by interior, outer tube member, sealed cartridge, wire electrode is formed, wherein: the pipe upper end seals with zirconia binder in described, electrode protection pipe parcel wire electrode is plugged in the ceramic inner pipe, the wire electrode bottom is exposed in the interior pipe, sheathed outer tube and protective casing outside ceramic inner pipe, one cooling device is installed on the protective casing outer wall, between outer tube and protective casing, connecting pipe is installed, be threaded with a sealed cartridge at described protective casing one end in addition, inject reference solution and be plugged in the described ceramic inner pipe with kapillary;
Described sealed cartridge is made up of chuck, dovetail ring, lock ring, end cap, sealing-plug, pressure ring, wherein: have V-shaped groove on the chuck, inboard, dovetail ring lower surface is a slope shape, with described V-shaped groove form fit, be threaded, lock ring is connected with dovetail ring inner thread, sealing-plug is positioned at lock ring, and end cap is connected with the lock ring outer wall thread, pressure ring is installed between end cap and sealing-plug.
The utlity model has following advantage:
1. utility model working stability, safe and reliable.The utility model is transformed on common Ag/AgCl contrast electrode basis and is formed, the working environment that can adapt to the fluid (as the working fluid of cogeneration plant, nuclear power plant, supercritical water oxidation waste treatment plant etc.) of high temperature, high pressure, high temperature resistant, high pressure design that adopt its interface section, thereby can cooperate with proving installation, guarantee that whole test environment is in stable, safe and reliable duty.
2. performance is good.The key position of the utility model electrode design adopts double seal, and at first, a resealing is positioned at the upper end of yttria-stabilized zirconia (YSZ) ceramic pipe pipe; Secondly; second resealing is to overlap a zirconia ceramics pipe again outside the YSZ ceramic pipe of whole oven dry good seal; the metal coating sleeve pipe fitting tight of making then by a teflon connecting pipe, a high pressure stainless steel sealed cartridge and a Hastelloy C, good sealing effect.
Life-span long, the measuring accuracy height.The utility model contrast electrode adopts the reference solution real time calibration, has guaranteed that measurement environment is always the fluid operating environment of high temperature, high pressure; Described in addition teflon seal plug can bear the inner high-pressure fluid and the pressure reduction of low pressure external environment, makes improve greatly the serviceable life of entire electrode, guaranteed measurement mechanism can be for a long time, run without interruption.The utility model carries out real time calibration by reference solution, obtains stable reference potential, thereby can guarantee to be no more than 500 ℃ of errors with the pH value of water solution of any some temperature of interior mensuration ± 0.03.
4. simple and easy with novel operation, clean easily and install.
Description of drawings
Fig. 1 the utility model structural representation.
Fig. 2 is the structural representation of sealed cartridge among Fig. 1.
Embodiment
Below in conjunction with drawings and Examples the utility model structure is described in further detail.
As shown in Figure 1, the utility model contrast electrode forms for transforming on the basis of common Ag or AgCl contrast electrode, for adapting to high temperature, the working environment of high pressure, its interface section is adopted high temperature resistant, the high pressure design, its concrete structure is by interior, outer tube member, sealed cartridge, wire electrode is formed, wherein: pipe 11 upper ends seal with zirconia binder 12 in described, electrode protection pipe 1 parcel wire electrode is plugged in 11 li of ceramic inner pipes, pipe was 11 li in wire electrode 9 bottoms were exposed to, sheathed outer tube 5 and protective casing 6 outside ceramic inner pipe 11, one cooling device 10 is installed on protective casing 6 outer walls, connecting pipe 4 is installed between outer tube 5 and protective casing 6, be threaded with a sealed cartridge 3 at described protective casing 6 one ends in addition, inject reference solution and be plugged in 11 li of described ceramic inner pipes with kapillary 2; Described wire electrode is the 9Ag/AgCl wire electrode;
As shown in Figure 2, described sealed cartridge 3 is made up of chuck 31, dovetail ring 32, lock ring 33, end cap 34, sealing-plug 35, pressure ring 36, wherein: have V-shaped groove on the chuck 31, inboard, dovetail ring 32 lower surfaces is a slope shape, with described V-shaped groove form fit, be threaded, lock ring 33 is connected with dovetail ring 32 inner threads, sealing-plug 35 is positioned at lock ring 33, end cap 34 is connected with lock ring 33 outer wall threads, pressure ring 36 is installed between end cap 34 and sealing-plug 35;
Adopt the method for described zirconium dioxide adhesive seal: 1) zirconia is prepared into lime sand; 2) by 1: 8 percentage by weight, adopt high temperature resistant epoxy evenly to mix with the zirconia lime sand, the upper end of pipe 11 in pouring into then, length is about 1/4 of homogeneous tube length, puts into vacuum drying oven after the compacting, in 800 ℃ of insulations oven dry in 24 hours.
Described sealing-plug 13, kapillary 2, connecting pipe 4 are polytetrafluoroethylmaterial material (homemade, as can to buy in the building materials market); Electrode protection pipe 1 adopts contractility polytetrafluoroethylmaterial material (imported materials and items can be buied in the building materials market); Described protective casing 6 is Hastelloy C material (comforting steel production); Chuck 31 in the described sealed cartridge 3, dovetail ring 32, lock ring 33, end cap 34, pressure ring 36 adopt stainless steel material 1Cr18Ni9Ti (comforting steel production).
Described outer tube 5, interior pipe 11 are the YSZ material, by weight percentage, its component content is: 8% yttrium oxide powder, 92% Zirconium oxide powder, manufacture craft is as follows: yttrium oxide powder is evenly mixed with Zirconium oxide powder, cold briquetting under 50MPa pressure placed 850 ℃ of vacuum drying oven sintering 8 hours then, and stove is chilled to room temperature.
Described yttrium oxide powder and Zirconium oxide powder are all purchased in the inferior High Seience Technology Co., Ltd. of Pan American.
Teflon seal plug 35 in the described sealed cartridge 3 can bear the inner high-pressure fluid and the pressure reduction of low pressure external environment, makes improve greatly the serviceable life of entire electrode, has guaranteed the long-term reliability of measurement result.
Adopting the utility model is that 230 ℃, pressure are that the HCl solution of the 0.01mol/L of 28Mpa is example with probe temperature, select for use digital metering pump that the reference solution NaCl of 0.1mol/L is constantly injected to measure by the reference solution inlet on the kapillary 2, with the flow velocity of 0.2ml/s and use device, recording the pH value of test solution under this test condition is 1.273, its measuring accuracy reaches ± and 0.03.
Claims (3)
1. contrast electrode that is used for on-line monitoring high temperature and high pressure environment fluid pH value; comprise wire electrode; it is characterized in that: in also comprising; outer tube member; sealed cartridge; wherein: pipe (11) upper end seals with zirconia binder (12) in described; electrode protection pipe (1) parcel wire electrode (9) is plugged in ceramic inner pipe (11) lining; wire electrode (9) bottom is exposed to interior pipe (11) lining; sheathed outer tube (5) and protective casing (6) outside ceramic inner pipe (11); one cooling device (10) is installed on protective casing (6) outer wall; between outer tube (5) and protective casing (6), connecting pipe (4) is installed; be threaded with a sealed cartridge (3) at described protective casing (6) one ends in addition, inject reference solution and be plugged in described ceramic inner pipe (11) lining with kapillary (2).
2. according to the described contrast electrode that is used for on-line monitoring high temperature and high pressure environment fluid pH value of claim 1, it is characterized in that: described sealed cartridge (3) is by chuck (31), dovetail ring (32), lock ring (33), end cap (34), sealing-plug (35), pressure ring (36) is formed, wherein: chuck has V-shaped groove on (31), inboard, dovetail ring (32) lower surface is a slope shape, with described V-shaped groove form fit, be threaded, lock ring (33) is connected with dovetail ring (32) inner thread, sealing-plug (35) is positioned at lock ring (33), end cap (34) is connected with lock ring (33) outer wall thread, pressure ring (36) is installed between end cap (34) and sealing-plug (35).
3. according to claim 1 or the 2 described contrast electrodes that are used for on-line monitoring high temperature and high pressure environment fluid pH value, it is characterized in that: described outer tube (5), interior pipe (11) are yttrium oxide stabilized zirconium oxide material; Described sealing-plug (13), kapillary (2), connecting pipe (4) are polytetrafluoroethylmaterial material; Electrode protection pipe (1) adopts the contractility polytetrafluoroethylmaterial material; Described protective casing (6) is a Hastelloy C material; Chuck (31) in the described sealed cartridge (3), dovetail ring (32), lock ring (33), end cap (34), pressure ring (36) adopt stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02274026 CN2550760Y (en) | 2002-07-08 | 2002-07-08 | PH valve reference electrode for on-line monitoring high temperature, high pressure environment fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02274026 CN2550760Y (en) | 2002-07-08 | 2002-07-08 | PH valve reference electrode for on-line monitoring high temperature, high pressure environment fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2550760Y true CN2550760Y (en) | 2003-05-14 |
Family
ID=33738364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02274026 Expired - Lifetime CN2550760Y (en) | 2002-07-08 | 2002-07-08 | PH valve reference electrode for on-line monitoring high temperature, high pressure environment fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2550760Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006099799A1 (en) * | 2005-03-21 | 2006-09-28 | Ronghua Zhang | Zr/ZrO2 ELECTRODE AND PRODUCING METHOD THEREOF AND INTEGRATED HIGH TEMPERATURE AND HIGH- PRESSURE CHEMICAL SENSOR COMPOSED BY THE SAME |
| CN101470094B (en) * | 2008-09-09 | 2012-12-05 | 中国科学院金属研究所 | Method for measuring pH value of high-temperature high-pressure water solution |
| CN106018520A (en) * | 2016-07-22 | 2016-10-12 | 天津大学 | Electrode system for electrochemical measurement in high-temperature high-pressure water environment and application of electrode system |
| CN104792839B (en) * | 2015-03-27 | 2017-04-19 | 中国科学院金属研究所 | Ceramic film electrode capable of realizing electrochemical testing of high-temperature and high-pressure water |
| CN107843632A (en) * | 2017-10-25 | 2018-03-27 | 三峡大学 | A kind of solid-state phosphate anion selection electrode based on tungsten filament, preparation method and application |
| CN112986366A (en) * | 2021-02-24 | 2021-06-18 | 中国核动力研究设计院 | Sensor for in-situ measurement of pH of high-temperature and high-pressure water and measurement method |
-
2002
- 2002-07-08 CN CN 02274026 patent/CN2550760Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006099799A1 (en) * | 2005-03-21 | 2006-09-28 | Ronghua Zhang | Zr/ZrO2 ELECTRODE AND PRODUCING METHOD THEREOF AND INTEGRATED HIGH TEMPERATURE AND HIGH- PRESSURE CHEMICAL SENSOR COMPOSED BY THE SAME |
| CN101470094B (en) * | 2008-09-09 | 2012-12-05 | 中国科学院金属研究所 | Method for measuring pH value of high-temperature high-pressure water solution |
| CN104792839B (en) * | 2015-03-27 | 2017-04-19 | 中国科学院金属研究所 | Ceramic film electrode capable of realizing electrochemical testing of high-temperature and high-pressure water |
| CN106018520A (en) * | 2016-07-22 | 2016-10-12 | 天津大学 | Electrode system for electrochemical measurement in high-temperature high-pressure water environment and application of electrode system |
| CN108226245A (en) * | 2016-07-22 | 2018-06-29 | 天津大学 | The detection method of 304 stainless steel corrosion resistances under hot conditions |
| CN108387623A (en) * | 2016-07-22 | 2018-08-10 | 天津大学 | The detection method of X65 pipe line steels corrosion resistance under hot conditions |
| CN108226245B (en) * | 2016-07-22 | 2020-02-18 | 天津大学 | Method for detecting corrosion resistance of 304 stainless steel under high temperature condition |
| CN108387623B (en) * | 2016-07-22 | 2020-02-18 | 天津大学 | Method for detecting corrosion resistance of X65 pipeline steel |
| CN107843632A (en) * | 2017-10-25 | 2018-03-27 | 三峡大学 | A kind of solid-state phosphate anion selection electrode based on tungsten filament, preparation method and application |
| CN112986366A (en) * | 2021-02-24 | 2021-06-18 | 中国核动力研究设计院 | Sensor for in-situ measurement of pH of high-temperature and high-pressure water and measurement method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120708 Granted publication date: 20030514 |