CN202033335U - Thermostat of ion chromatography conductivity detector - Google Patents
Thermostat of ion chromatography conductivity detector Download PDFInfo
- Publication number
- CN202033335U CN202033335U CN201120060729XU CN201120060729U CN202033335U CN 202033335 U CN202033335 U CN 202033335U CN 201120060729X U CN201120060729X U CN 201120060729XU CN 201120060729 U CN201120060729 U CN 201120060729U CN 202033335 U CN202033335 U CN 202033335U
- Authority
- CN
- China
- Prior art keywords
- thermostat
- conductivity detector
- electric conductivity
- temperature
- metal solid
- 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 - Fee Related
Links
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
Disclosed is a thermostat of an ion chromatography conductivity detector, an inner cavity of the thermostat is a metal solid, the conductivity detector, a heating bar and a temperature sensor are surrounded by the metal solid, and the heating bar and the temperature sensor are connected with a control system. The metal solid is fast in heating and high in heat conducting quantity so that time for detecting and preparing is shortened, is large in heat capacity, not easy to be affected by convection of external temperature and can meet requirements of constant temperature of tested solution, and meanwhile, uniformity of temperature inside the thermostat and detecting accuracy of ion chromatography are guaranteed. Besides, gaps are filled by silicone grease, so that the thermostat is fast and uniform in heating and the temperature sensor is accurate in measurement. Furthermore, contact area of the solution to be tested with the thermostat is enlarged by a helical liquid inlet pipe of the conductivity detector, and thereby thermostatic effect is improved.
Description
Technical field
The utility model relates to the electric conductivity detector of chromatography of ions instrument, is a kind of thermostat of ion chromatograph conductance detecting device concretely.
Background technology
The electric conductivity detector of ion chromatograph is led with the electricity of solion to be measured or resistance is detected object, and the measurement of electric conductivity detector is subjected to Temperature Influence.The detected solution temperature fluctuation causes the baseline noise and the drift of electric conductivity detector; Temperature raises, and conductivity increases, and temperature raises 1 ℃ generally speaking, and conductivity increases about 2%.In carrying out conductimetry, require the temperature of detected solution to keep constant, and existing electric conductivity detector adopts internal conductance detecting device electricity to lead to isolate between the pole piece, outside structure with the organic glass encapsulation, this structure exists solution to be measured to be subject to ambient temperature convection current influence, not reach the shortcoming of constant temperature requirement, has influenced the accuracy of detection of chromatography of ions.
The utility model content
The solution to be measured that the utility model will solve existing electric conductivity detector is subject to ambient temperature convection current influence, does not reach the constant temperature requirement, influences the technical matters of accuracy of detection, and a kind of thermostat of ion chromatograph conductance detecting device of good constant-temperature effect is provided.
In order to solve the problems of the technologies described above, the technical scheme that the utility model is taked is: a kind of thermostat of ion chromatograph conductance detecting device, comprise the thermostat shell, the thermostat inner chamber is the metal solid, and the metal solid surrounds electric conductivity detector, heating rod and temperature sensor; Heating rod and temperature sensor connection control system.
The metal solid temperature signal that temperature sensor is surveyed feeds back to control system, the work of control system control heating rod, and assurance thermostat inner chamber is guaranteed the accuracy of detection of chromatography of ions in range of set temperature.The heating of metal solid is fast, conducts heat, and shortens and detects setup time; Metal solid thermal capacity is big, is not subject to ambient temperature convection current influence, can satisfy the constant temperature requirement of detected solution, and can guarantee that cavity temperature is even in the thermostat.
The electric conductivity detector feed tube of electric conductivity detector links to each other with the rejector of ion chromatography system, and the electric conductivity detector drain pipe links to each other with waste liquid bottle.
Electric conductivity detector, heating rod and temperature sensor are inlaid in the metal solid, and heat-conducting silicone grease is filled in the gap of setting-in.Heat-conducting silicone grease has good heat transferred and insulativity, can make the thermostat heating fast, even, and temperature sensor measurement is accurate.
Heating rod comprises thick control electrically heated rod and thin control electrically heated rod.Slightly the control electrically heated rod is powerful heating rod, and work when the temperature of cavity temperature and setting differs big in thermostat improves the interior cavity temperature of thermostat as early as possible; Thin control electrically heated rod is low power heating rod, is used for cavity temperature in accurate raising, the control thermostat.
The electric conductivity detector feed tube that is positioned at the electric conductivity detector of thermostat is a kapillary, coiled.Electric conductivity detector feed tube coiled has strengthened the contact area of the thermostat that solution to be measured and temperature be suitable for detecting, and increases the constant temperature effect.
The electric conductivity detector feed tube that is positioned at the electric conductivity detector of thermostat is wrapped on the metal solid tubes.
The utility model has the advantages that: the heating of metal solid is fast, and the conduction heat is good, shortens and detects setup time; Metal solid thermal capacity is big, is not subject to ambient temperature convection current influence, can satisfy the constant temperature requirement of detected solution, and can guarantee that cavity temperature is even in the thermostat, guarantees the accuracy of detection of chromatography of ions.Heat-conducting silicone grease is filled the gap of electric conductivity detector, heating rod and temperature sensor and metal solid, and the thermostat heating is fast, even, and temperature sensor measurement is accurate.Helically wound electric conductivity detector feed tube has strengthened the contact area of the thermostat that solution to be measured and temperature be suitable for detecting, and has increased the constant temperature effect.
Description of drawings
The structural representation of an embodiment of the utility model.
Embodiment
Accompanying drawings.Electric conductivity detector 8 among the accompanying drawing embodiment is five electrode conductance detecting devices, have among the figure two groups totally five electricity lead line 15, one group on the left side is from a left side and the right side is first to the 3rd electricity leads line, one group on the right is from a left side and to be the 4th and the 5th electricity lead line on the right side, first and the 4th is that the electricity that applies voltage electrode is led line, applies 2000 to 4000Hz sine wave or square wave alternating-current voltage between two electrodes; Second and the 3rd is that the electricity of two potential electrode is led line; The 5th is that the electricity of the guarded electrode that links to each other with signal wire is led line.The inwall of crust of the device 2 is polyurethane heat insulation materials 5 of thickness 20mm, and insulation material 5 cuts off metal solid 7 by shell 2 heat radiations, guarantees the precision of thermostat inner control temperature.Heating rod comprises thick control electrically heated rod 3 and thin control electrically heated rod 9.Thick control electrically heated rod 3 is Φ 6*40mm electrically heated rods of model DC24V/20W, and carefully controlling electrically heated rod 9 is Φ 6*20mm electrically heated rods of model DC24V/10W.Thick control electrically heated rod 3 is mainly used in quick temperature with metal solid 7 and is heated on the temperature value of appointment from room temperature, promptly improve temperature rise speed, the temperature that thin control electrically heated rod 9 is mainly used in metal solid 7 is controlled on certain precision accurately, i.e. constant temperature precision control.Thick control electrically heated rod 3 and thin control electrically heated rod 9 make the temperature of metal solid 7 can reach the temperature value of setting fast, can precisely control the precision of metal solid 7 temperature again, have realized that temperature rise and accuracy of temperature control meet the demands simultaneously.Metal solid 7 adopts copper or aluminium machine-shaping usually, and the metal solid 7 of present embodiment is a brass material.Five electricity lead line 15, temperature sensor 4, temperature sensor connecting line 13, slightly control electrically heated rod 3, slightly control electrically heated rod connecting line 14, carefully control electrically heated rod 9, carefully control electrically heated rod connecting line 10, electric conductivity detector 8, electric conductivity detector feed tube 12 and electric conductivity detector drain pipe 6 and be inlaid in the groove of metal solid 7, heat-conducting silicone grease 11 sealings are filled in the gap of setting-in, and the heat-conducting silicone grease 11 at electric conductivity detector feed tube 12 places only is shown among the figure.Electric conductivity detector feed tube 12 is kapillaries, and coiled does not illustrate the shape of electric conductivity detector feed tube 12 among the figure.Electric conductivity detector feed tube 12 can also be intensive be wrapped on the metal solid tubes, its purpose all is to strengthen the contact area of the thermostat that solution to be measured and temperature be suitable for detecting, increase constant temperature effect.Electric conductivity detector feed tube 12 links to each other with rejector, and electric conductivity detector drain pipe 6 links to each other with waste liquid bottle.Five electricity lead line 15, slightly control electrically heated rod 3, carefully control electrically heated rod 9 and be connected signal processing module and control system 1 with temperature sensor 4, signal processing module and control system 1 major function are the pairing electricity of ion concentration that electric conductivity detector 8 sends to be led or temperature signal that temperature sensor 4 transmits is analyzed, detects and show and accepted to resistance and to thick control electrically heated rod 3 with carefully control electrically heated rod 9 and carry out work control.
Claims (5)
1. the thermostat of an ion chromatograph conductance detecting device comprises thermostat shell (2), it is characterized in that the thermostat inner chamber is metal solid (7), and metal solid (7) surrounds electric conductivity detector (8), heating rod and temperature sensor (4); Heating rod and temperature sensor (4) connection control system.
2. the thermostat of ion chromatograph conductance detecting device according to claim 1 is characterized in that electric conductivity detector (8), heating rod and temperature sensor (4) are inlaid in the metal solid (7), and heat-conducting silicone grease (11) is filled in the gap of setting-in.
3. the thermostat of ion chromatograph conductance detecting device according to claim 1 is characterized in that heating rod comprises thick control electrically heated rod (3) and thin control electrically heated rod (9).
4. the thermostat of ion chromatograph conductance detecting device according to claim 1, the electric conductivity detector feed tube (12) that it is characterized in that being positioned at the electric conductivity detector (8) of thermostat is a kapillary, coiled.
5. according to the thermostat of claim 1 or 4 described ion chromatograph conductance detecting devices, the electric conductivity detector feed tube (12) that it is characterized in that being positioned at the electric conductivity detector (8) of thermostat is wrapped on the metal solid tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120060729XU CN202033335U (en) | 2011-03-04 | 2011-03-04 | Thermostat of ion chromatography conductivity detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120060729XU CN202033335U (en) | 2011-03-04 | 2011-03-04 | Thermostat of ion chromatography conductivity detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202033335U true CN202033335U (en) | 2011-11-09 |
Family
ID=44895629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120060729XU Expired - Fee Related CN202033335U (en) | 2011-03-04 | 2011-03-04 | Thermostat of ion chromatography conductivity detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202033335U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854275A (en) * | 2012-07-29 | 2013-01-02 | 安徽皖仪科技股份有限公司 | Ion chromatography digital conductance detecting device based on digital signal processor (DSP) |
| CN102901785A (en) * | 2012-10-22 | 2013-01-30 | 南通大学 | Temperature uniformizer integrating multiple chromatographic columns with different lengths and diameters |
| CN102914611A (en) * | 2012-10-12 | 2013-02-06 | 南通大学 | Temperature balancer with multiple chromatographic columns integrated |
| CN113125516A (en) * | 2021-04-01 | 2021-07-16 | 青岛盛瀚色谱技术有限公司 | Wide-range constant-temperature bipolar pulse conductance detector |
-
2011
- 2011-03-04 CN CN201120060729XU patent/CN202033335U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854275A (en) * | 2012-07-29 | 2013-01-02 | 安徽皖仪科技股份有限公司 | Ion chromatography digital conductance detecting device based on digital signal processor (DSP) |
| CN102854275B (en) * | 2012-07-29 | 2014-11-12 | 安徽皖仪科技股份有限公司 | Ion chromatography digital conductance detecting device based on digital signal processor (DSP) |
| CN102914611A (en) * | 2012-10-12 | 2013-02-06 | 南通大学 | Temperature balancer with multiple chromatographic columns integrated |
| CN102914611B (en) * | 2012-10-12 | 2013-12-11 | 南通大学 | Temperature balancer with multiple chromatographic columns integrated |
| CN102901785A (en) * | 2012-10-22 | 2013-01-30 | 南通大学 | Temperature uniformizer integrating multiple chromatographic columns with different lengths and diameters |
| CN102901785B (en) * | 2012-10-22 | 2013-12-04 | 南通大学 | Temperature uniformizer integrating multiple chromatographic columns with different lengths and diameters |
| CN113125516A (en) * | 2021-04-01 | 2021-07-16 | 青岛盛瀚色谱技术有限公司 | Wide-range constant-temperature bipolar pulse conductance detector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202033335U (en) | Thermostat of ion chromatography conductivity detector | |
| CN102095824B (en) | Heating device on capillary chromatographic column | |
| CN201892588U (en) | Water-cooling type heat flux sensor | |
| CN101968511A (en) | Small electrode experiment device for measuring resistivity of mineral and solid insulating material | |
| CN102539472A (en) | Method for measuring heat conductivity of poor conductor by using steady-state comparison | |
| CN102175726A (en) | Device and method for monitoring fluid flow in rock sample at high temperature and high pressure | |
| CN102768085B (en) | Temperature sensor high-accuracy calibration device | |
| CN202794126U (en) | Conductance cell with solution temperature pretreatment function | |
| CN102589739A (en) | Multi-purpose thermocouple microelectrode and manufacturing method thereof | |
| CN202854100U (en) | Thermal conductivity detectors of gas chromatographic analyzer | |
| CN202383201U (en) | Electrical measuring instrument for rock ore | |
| CN102162805A (en) | Method and device for detecting existence of liquid capable of being electrolyzed and concentration of liquid | |
| JP5274515B2 (en) | Moisture concentration detector | |
| CN203720120U (en) | Device for testing axial heat conductivity coefficient of tubular material | |
| CN203837827U (en) | High temperature resistance wireless temperature sensor | |
| CN201807818U (en) | Test device for welding thermal efficiency | |
| CN101408554A (en) | Method for detecting flow speed with orientation selectivity by thermal balance | |
| CN105223228A (en) | A kind of thermal conductivity coefficient measurement instrument | |
| CN105571747A (en) | Heat flow detection device | |
| CN202486110U (en) | Conductive electrode | |
| CN203629690U (en) | ZigBee-based high-tension switch cabinet wireless temperature measurement system | |
| CN202066844U (en) | Constant temperature suppression conductivity cell | |
| CN101458219A (en) | Sensor device | |
| CN113447524A (en) | Portable semiconductor material thermal conductivity detection device and use method | |
| CN2650125Y (en) | Measuring electrode for liquid conductivity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20200304 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |