CN202256244U - Handheld trace dissolved oxygen analyzer with charging stand and flow detection tank - Google Patents
Handheld trace dissolved oxygen analyzer with charging stand and flow detection tank Download PDFInfo
- Publication number
- CN202256244U CN202256244U CN2011203373138U CN201120337313U CN202256244U CN 202256244 U CN202256244 U CN 202256244U CN 2011203373138 U CN2011203373138 U CN 2011203373138U CN 201120337313 U CN201120337313 U CN 201120337313U CN 202256244 U CN202256244 U CN 202256244U
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- flow detection
- dissolved oxygen
- detection pond
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Abstract
The utility model discloses a handheld trace dissolved oxygen analyzer with a charging stand and a flow detection tank. The analyzer comprises a chassis on which the charging stand and the flow detection tank are fixed; a handheld secondary apparatus is arranged on the charging stand; the flow detection tank is equipped with a columnar tank cavity inside; the upper end and the lower end of a sidewall of the flow detection tank are respectively provided with a liquid outlet and a liquid inlet communicated with the tank cavity; the liquid inlet is communicated with the tank cavity through a duct; a film-coated dissolved oxygen electrochemical sensor is arranged inside the tank cavity with a clearance between the sensor and the tank cavity; the lower end of the sensor is provided with a film pressing cap; an oxygen detection electrode is fixed in a central hole of the film pressing cap; the upper end of the sensor is fixed on the flow detection tank by an electrode pressing cap; a waterproof wiring terminals of the electrode on the upper end of the sensor is connected with the secondary apparatus through a cable; a radial flow guiding groove is arranged on the lower surface of the film pressing cap; and the duct below the film pressing cap is coaxial with the sensor and vertical to the lower surface of the film pressing cap.
Description
Technical field
The utility model relates to a kind of oligodynamical oxygen analyzer, especially a kind ofly be easy to carry, simple to operate, measure the hand-held oligodynamical oxygen analyzer that has charging base, flow detection pond fast and accurately.
Background technology
At present, be applied to a plurality of technical fields such as environmental protection, drink production (beverage, beer) and anticorrosion control for the detection of dissolved oxygen DO in the liquid, detection method commonly used is to use equipment such as dissolved oxygen electrochemical sensor and secondary instrument to detect.Dissolved oxygen electrochemical sensor has multiple; The film covering type dissolved oxygen electrochemical sensor is wherein a kind of; Its structure is to be provided with cylindrical housings, is provided with circular oxygenation measurement electrode, reference electrode and electrolyte etc. in the housing, and the front end of housing has the mould cap; Oxygen permeation membrane overlays on the oxygenation measurement electrode and is fixed on the central hole of pressure cap, and the diameter of circular oxygenation measurement electrode is slightly less than center-hole diameter.The electrode waterproof connection terminal that joins with oxygenation measurement electrode and reference electrode is fixed on the housing rear end, links to each other with secondary instrument through cable.During each the detection; All need the front end (oxygenation measurement electrode) of dissolved oxygen electrochemical sensor is inserted in the fluid to be measured; Oxygen in the liquid is penetrated into the potential electrode surface and carries out electrochemical reaction through oxygen permeation membrane; Form the curtage signal that is directly proportional with oxygen concentration, after secondary instrument is handled, demonstrate the dissolved oxygen concentration in the liquid.Existing checkout equipment exists problems such as complicated operation, detection speed is slow, accuracy of detection is low, especially is not suitable for the measurement trace dissolved oxygen, can't avoid the influence of infiltration to measuring of ambient oxygen.
Summary of the invention
The utility model be easy to carry in order to solve the above-mentioned technical matters that prior art exists, to provide a kind of, simple to operate, measure the hand-held oligodynamical oxygen analyzer that has charging base, flow detection pond fast and accurately.
The technical solution of the utility model is: a kind of hand-held oligodynamical oxygen analyzer with charging base, flow detection pond; Be provided with the chassis; On the chassis, be fixed with charging base and flow detection pond, the hand-held secondary instrument places on the charging base and charging electrode is arranged between the two; Said flow detection has cylindrical cell cavity in the pond; Flow detection pond sidewall upper, liquid outlet, liquid inlet that the lower end is respectively equipped with to communicate with cell cavity; Said liquid inlet is to communicate with cell cavity through conduit; Said cell cavity is built-in with the film covering type dissolved oxygen electrochemical sensor; Gapped between cell cavity inwall and the film covering type dissolved oxygen electrochemical sensor, the lower end of film covering type dissolved oxygen electrochemical sensor is the mould cap, and the oxygenation measurement electrode that is covered with oxygen permeation membrane is fixed on the central hole of mould cap; Film covering type dissolved oxygen electrochemical sensor upper end is fixed on the flow detection pond through the electrode pressure cap, and the electrode waterproof connection terminal of film covering type dissolved oxygen electrochemical sensor upper end joins through cable and secondary instrument; On the lower surface of said mould cap, also be provided with radially diversion trench, the conduit of mould cap below is coaxial with the film covering type dissolved oxygen electrochemical sensor and vertical with the lower surface of mould cap.
The equal diameters of the width of described radially diversion trench and oxygenation measurement electrode and with the diameter of conduit than being 3:1.
It is the nozzle platform of center to upper process that the bottom of said cell cavity has with the conduit, and the spacing between said nozzle platform and the oxygenation measurement electrode is less than 1mm.
The side in said hand-held secondary instrument and flow detection pond is connected to one, and front end is hinged with L shaped handle in the another side of hand-held secondary instrument, after L shaped handle is vertical, and the bottom surface coplane in its bottom surface and flow detection pond.
The set flow detection pond of the utility model has not only solved each detection and has all needed the electrochemical sensor front end is inserted the existing complicated operation problem of fluid to be measured; Main is the detection that can realize trace dissolved oxygen, and the hermetically sealed stream in flow detection pond has been avoided the influence of ambient oxygen infiltration to measuring; Set radially diversion trench, nozzle platform; All can make the oxygen from the fluid to be measured of conduit entering cell cavity fully pass through oxygen permeation membrane; Directly rush at the oxygenation measurement electrode; Both be convenient to quick measurement (can in the start several seconds, accomplish measure), can have washed out the bubble that sticks to electrode surface before the measurement again, improved accuracy of detection; Detected fluid flows into the top and flows out from cell cavity bottom, be convenient to emptying cell cavity internal gas, avoids there is dead volume in the cell cavity, also rapidly in the release fluid or the bubble that is produced in the fluid inflow process, can further improve accuracy of detection and measurement fast; Measure end back secondary instrument and place on the charging base, the rechargeable battery charging that charging base is provided with in the trend secondary instrument is closed after the charging automatically.Have be easy to carry, simple to operate, measure and quick and precisely to wait advantage.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the structural representation of the utility model embodiment charging base.
Fig. 3 is the structural representation of the utility model embodiment dissolved oxygen electrochemical sensor.
Fig. 4 is the profile schematic perspective view of the utility model embodiment.
Fig. 5 is the side view of the utility model embodiment.
Fig. 6, the 7th, the user mode figure of the utility model embodiment.
Embodiment
Below with the embodiment of accompanying drawings the utility model.Like Fig. 1,2,3,4, shown in 5: be provided with chassis 1, on chassis 1, be fixed with charging base 2 and flow detection pond 3, flow detection pond 3 can adopt Ya Keli to do raw material, because of its transparency is good, and the state of fluid to be measured in test process directly perceived.The hand-held secondary instrument 4 identical with prior art places on the charging base 2; On the hand-held secondary instrument 4 rechargeable battery and charging terminal are arranged; 2 have charging electrode 5 (reed) on the charging base; The charging terminal of hand-held secondary instrument 4 contacts with charging electrode 5, promptly between hand-held secondary instrument 4 and the charging base 2 charging electrode 5 is arranged.Observing apparatus display screen for ease, the tiltable of hand-held instrument are provided with (favouring surface level) and are fixed as one with flow detection pond 3 through web members such as screws, break away from and independent use with charging base 2 during detection.Like Fig. 6, shown in 7: front end is hinged with L shaped handle 18 in the side of hand-held secondary instrument 4, after L shaped handle is vertical, and the bottom surface coplane in its bottom surface and flow detection pond.Promptly conveniently lift, carry, also can be used as support and use, the hand-held secondary instrument 4 that is connected as a single entity all is placed on the desktop with flow detection pond 3 reposefully detects, need not operating personnel and handing instrument for a long time, can reduce labor intensity of operating personnel.Charging indicator light 17 is arranged on charging base 2, and to show whole charging process, pilot lamp 17 is bright during charging, and after charging was accomplished and closed automatically, pilot lamp 17 went out.Cylindrical cell cavity 6 is arranged in flow detection pond 3; Flow detection pond 3 sidewall upper, liquid outlet 7, liquid inlet 8 that the lower end is respectively equipped with to communicate with cell cavity 6; Said liquid inlet 8 communicates with cell cavity 6 through conduit 9; Cell cavity 6 is built-in with film covering type dissolved oxygen electrochemical sensor 10; Gapped between cell cavity 6 inwalls and the film covering type dissolved oxygen electrochemical sensor 10, the lower end of film covering type dissolved oxygen electrochemical sensor 10 is mould caps 11, and the oxygen amount electrode 12 that is covered with oxygen permeation membrane is fixed on the central hole of mould cap 11; Film covering type dissolved oxygen electrochemical sensor 10 upper ends are fixed on the flow detection pond 3 through electrode pressure cap 13, and the electrode waterproof connection terminal 14 of film covering type dissolved oxygen electrochemical sensor 10 upper ends joins through cable and secondary instrument 4; On the lower surface of pressure cap 11, also be provided with radial slot, i.e. diversion trench 15 radially, the conduit 9 of pressure cap 11 belows is coaxial and vertical with the lower surface of mould cap 11 with film covering type dissolved oxygen electrochemical sensor 10.Need not to require the axial angle of inclination of cylindrical cell cavity 6, can vertically or be obliquely installed (vertical cell cavity is easier to processing).In order to guarantee that the fluid to be measured that flows into cell cavity 6 all fully contacts with oxygenation measurement electrode 12, radially the equal diameters of the width of diversion trench 15 and circular oxygenation measurement electrode 12 and with the diameter of conduit 9 than being 3:1.As being the nozzle platform 16 of center to upper process one of the bottom of cell cavity 6 processing with conduit 9, nozzle platform 16 is parallel with oxygenation measurement electrode 12, and spacing therebetween then can accurately be measured less than 1mm fast.
The course of work:
Two withstand voltage PU transparent tube are joined with liquid outlet 7, liquid inlet 8 respectively through stainless steel cutting ferrule sealing adaptor, during detection, in the other end insertion fluid to be measured conduit with withstand voltage PU transparent tube.After the start, fluid to be measured is 8 entering from the liquid inlet, get into the bottom of cell cavities 6 through conduit 9, and after radially diversion trench 15 flows, through the gap between cell cavity 6 inwalls and the film covering type dissolved oxygen electrochemical sensor 10, flow out from liquid outlet 7.
Fluid to be measured is when radially diversion trench 15 flows, and oxygen wherein (dissolved oxygen DO) fully through oxygen permeation membrane, directly rushes at the oxygenation measurement electrode, can in the start several seconds, accomplish and measure, and can wash out the bubble that sticks to electrode surface again, improves accuracy of detection; Detected fluid flows into the top from the cell cavity bottom and flows out; Be convenient to emptying cell cavity internal gas; Avoid there is dead volume in the cell cavity, also rapidly in the release fluid or the bubble that is produced in the fluid inflow process (bubble can be overflowed from outlet), can further improve accuracy of detection.
Claims (4)
1. hand-held oligodynamical oxygen analyzer with charging base, flow detection pond; It is characterized in that: be provided with chassis (1); On chassis (1), be fixed with charging base (2) and flow detection pond (3), hand-held secondary instrument (4) places on the charging base (2) and charging electrode (5) is arranged between the two; Cylindrical cell cavity (6) is arranged in the said flow detection pond (3); Flow detection pond (3) sidewall upper, liquid outlet (7), liquid inlet (8) that the lower end is respectively equipped with to communicate with cell cavity (6); Said liquid inlet (8) is to communicate with cell cavity (6) through conduit (9); Said cell cavity (6) is built-in with film covering type dissolved oxygen electrochemical sensor (10); Gapped between cell cavity (6) inwall and the film covering type dissolved oxygen electrochemical sensor (10); The lower end of film covering type dissolved oxygen electrochemical sensor (10) is mould cap (11); The oxygenation measurement electrode (12) that is covered with oxygen permeation membrane is fixed on the central hole of mould cap (11), and film covering type dissolved oxygen electrochemical sensor (10) upper end is fixed on the flow detection pond (3) through electrode pressure cap (13), and the electrode waterproof connection terminal (14) of film covering type dissolved oxygen electrochemical sensor (10) upper end joins through cable and secondary instrument (4); On the lower surface of said pressure cap (11), also be provided with radially diversion trench (15), the conduit (9) of mould cap (11) below is coaxial with film covering type dissolved oxygen electrochemical sensor (10) and vertical with the lower surface of mould cap (11).
2. the hand-held oligodynamical oxygen analyzer with charging base, flow detection pond according to claim 1 is characterized in that: the equal diameters of the width of described radially diversion trench (15) and oxygenation measurement electrode (12) and with the diameter of conduit (9) than being 3:1.
3. the hand-held oligodynamical oxygen analyzer with charging base, flow detection pond according to claim 1 and 2; It is characterized in that: it is the nozzle platform (16) of center to upper process that the bottom of said cell cavity (6) has with conduit (9), and the spacing between said nozzle platform (16) and the oxygenation measurement electrode (13) is less than 1mm.
4. the hand-held oligodynamical oxygen analyzer with charging base, flow detection pond according to claim 3; It is characterized in that: the side that said hand-held secondary instrument (4) favours surface level and flow detection pond (3) is connected to one; Another side front end at hand-held secondary instrument (4) is hinged with L shaped handle (18); After L shaped handle (18) is vertical, the bottom surface coplane in its bottom surface (19) and flow detection pond (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203373138U CN202256244U (en) | 2011-09-09 | 2011-09-09 | Handheld trace dissolved oxygen analyzer with charging stand and flow detection tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203373138U CN202256244U (en) | 2011-09-09 | 2011-09-09 | Handheld trace dissolved oxygen analyzer with charging stand and flow detection tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202256244U true CN202256244U (en) | 2012-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203373138U Expired - Lifetime CN202256244U (en) | 2011-09-09 | 2011-09-09 | Handheld trace dissolved oxygen analyzer with charging stand and flow detection tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202256244U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435646A (en) * | 2011-09-09 | 2012-05-02 | 大连赛恩仪表股份有限公司 | Hand-held trace dissolved oxygen analytic instrument with charging base and flow detection pool |
-
2011
- 2011-09-09 CN CN2011203373138U patent/CN202256244U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435646A (en) * | 2011-09-09 | 2012-05-02 | 大连赛恩仪表股份有限公司 | Hand-held trace dissolved oxygen analytic instrument with charging base and flow detection pool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |