CN110926920A - Temperature adjusting device and method for CODmn digestion tank - Google Patents
Temperature adjusting device and method for CODmn digestion tank Download PDFInfo
- Publication number
- CN110926920A CN110926920A CN201911270296.8A CN201911270296A CN110926920A CN 110926920 A CN110926920 A CN 110926920A CN 201911270296 A CN201911270296 A CN 201911270296A CN 110926920 A CN110926920 A CN 110926920A
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- temperature
- digestion tank
- sealing
- digestion
- heat preservation
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- 230000029087 digestion Effects 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims description 9
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 238000004321 preservation Methods 0.000 claims abstract description 16
- 239000004519 grease Substances 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims abstract description 5
- 238000002955 isolation Methods 0.000 claims abstract description 4
- 238000012360 testing method Methods 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000012546 transfer Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 2
- 230000003750 conditioning effect Effects 0.000 claims 1
- 238000009413 insulation Methods 0.000 claims 1
- 230000000087 stabilizing effect Effects 0.000 claims 1
- 238000010792 warming Methods 0.000 claims 1
- 239000000243 solution Substances 0.000 description 8
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000012085 test solution Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
A temperature adjusting device for a CODmn digestion tank comprises a stirrer, a temperature adjusting device and a temperature adjusting device, wherein the stirrer is arranged in the digestion tank and used for stirring a solution in the digestion tank; the sealing cover is used for sealing the digestion tank; the internal heating unit is attached to the digestion tank through the uniformly coated heat-conducting grease; the internal temperature measuring unit is used for measuring the temperature of the digestion tank; and the external heat preservation chamber is a heat preservation chamber formed by a closed heat preservation layer and forms sealing isolation for the digestion tank.
Description
Technical Field
The invention belongs to the technical field of analytical instruments, and particularly relates to a temperature adjusting device and method for a CODmn digestion pool.
Background
In the CODmn permanganate index experiment in the field of instrumental analysis, the temperature deviation in a digestion tank is the most critical factor influencing the repeatability of the measured value. During the experiment, the heating needs to be accelerated and the heat dissipation needs to be rapid, which is in contradiction with the stability control of the temperature. And volatile solution exists in the digestion tank reaction, which requires a set of sealing device.
Disclosure of Invention
The embodiment of the invention aims to provide a temperature adjusting device for a CODmn digestion pool, and aims to solve the problem that the temperature of the CODmn digestion pool is difficult to keep stable in a test.
In one embodiment of the invention, a temperature adjusting device for a CODmn digestion pool comprises,
the stirrer is arranged in the digestion tank and is used for stirring the solution in the digestion tank;
the sealing cover is used for sealing the digestion tank;
the internal heating unit is attached to the digestion tank through the uniformly coated heat-conducting grease;
the internal temperature measuring unit is used for measuring the temperature of the digestion tank;
and the external heat preservation chamber is a heat preservation chamber formed by a closed heat preservation layer and forms sealing isolation for the digestion tank.
The temperature adjusting device for the CODmn digestion tank provided by the embodiment of the invention not only meets the sealing requirement of the digestion tank, but also ensures that the temperature difference is unchanged within a certain time through the double functions of internal heating and external heat preservation, and provides a foundation for improving the repeatability precision of the measured value.
Drawings
The above and other objects, features and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the invention are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which:
fig. 1 is a schematic cross-sectional view of a temperature adjustment device according to an embodiment of the invention.
Fig. 2 is a schematic cross-sectional view of a temperature adjustment device according to an embodiment of the invention.
1-internal temperature measuring unit, 2-stirring unit, 3-internal heating unit, 4-external heat-insulating chamber, 5-sealing baffle plate.
Detailed Description
According to one or more embodiments, as described in FIG. 1. A temperature adjusting device for a CODmn digestion pool comprises,
the stirrer is arranged in the digestion tank and is used for stirring the solution in the digestion tank;
the sealing cover is used for sealing the digestion tank;
the internal heating unit is attached to the digestion tank through the uniformly coated heat-conducting grease;
the internal temperature measuring unit is used for measuring the temperature of the digestion tank and is made by attaching a heating sheet on an aluminum part;
and the external heat preservation chamber is a heat preservation chamber formed by a closed heat preservation layer and forms sealing isolation for the digestion tank. The heat-insulating layer of the external heat-insulating chamber is provided with a convection fan for heat dissipation between the inside and the outside of the temperature adjusting device. And a sealing baffle is arranged outside the convection fan and used for isolating an external heat preservation chamber from air heat transfer in the test process.
In order to ensure the internal heating sealing property, the sealed digestion device utilizes the heating sheet to heat, the heating sheet is attached on the aluminum workpiece, and the digestion tank is coated with heat conduction grease which is uniformly attached. This enables the solution in the digestion tank to be uniform when heated or cooled.
When the solution in the digestion pool is digested, the solution is stirred by a stirrer so that the temperature is consistent, and the chemical reaction is sufficient. A backflow system is formed in the sealed heating environment of the sealing cover, the temperature can be rapidly increased to 106 ℃ through continuous heating of the heater, real-time temperature monitoring is carried out through the internal temperature measuring unit, and the solution in the digestion pool is digested at the stable temperature when the temperature reaches 106 ℃, wherein the time is 30 minutes. Then, the temperature is smoothly reduced and is maintained at 86 ℃. The digestion tank solution was then titrated. Therefore, a micro reflux system is formed in the digestion tank, the volatile substances in the gas form are condensed when encountering the tank wall with low temperature, and then flow back to the test solution along the tank wall, so that the loss of the volatile substances is reduced, and the accuracy and the anti-interference capability of the measurement result are improved.
The external heat preservation chamber is arranged, because a stable environment temperature is needed after the internal heating, the temperature consistency in the test process at each time can be ensured, and the repeatability precision of the measured value is ensured. The outside is subjected to heat preservation treatment to obtain a constant temperature environment. Rapid heat dissipation is also required in order not to affect the start time of the next test. After the test, the inside and the outside are rapidly cooled through the convection fan, and in the test process, the convection fan is provided with the sealing blocking piece, so that the outside is insulated from the air, and the temperature is not transferred.
It should be noted that while the foregoing has described the spirit and principles of the invention with reference to several specific embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, nor is the division of aspects, which is for convenience only as the features in these aspects cannot be combined. The invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (6)
1. The temperature adjusting device for the CODmn digestion tank is characterized by comprising a stirrer, a water tank, a water;
the sealing cover is used for sealing the digestion tank;
the internal heating unit is attached to the digestion tank through the uniformly coated heat-conducting grease;
the internal temperature measuring unit is used for measuring the temperature of the digestion tank;
and the external heat preservation chamber is a heat preservation chamber formed by a closed heat preservation layer and forms sealing isolation for the digestion tank.
2. The apparatus of claim 1, wherein the insulation of the outer insulated chamber is provided with convection fans for dissipating heat between the interior and exterior of the temperature conditioning apparatus.
3. The apparatus of claim 2, wherein the convection fan is externally provided with a sealing flap for isolating the external insulated chamber from air heat transfer during the testing process.
4. The device of claim 1, wherein the internal warming cell is made of a heating sheet attached to an aluminum piece.
5. A CODmn digestion tank temperature adjustment method, which is characterized by adopting the device as claimed in claim 1, and comprises the following steps:
when the solution in the digestion pool is digested, a stirrer is used for stirring;
under the sealing of the sealing cover, the temperature is rapidly raised to 106 ℃ by continuously heating through the internal heating unit, and the real-time temperature monitoring is carried out through the internal temperature measuring unit;
when the temperature reaches 106 ℃, stabilizing the temperature, and digesting the solution in the digestion tank for 30 minutes;
then, carrying out stable temperature reduction, and maintaining the temperature at 86 ℃;
the digestion tank solution was then titrated.
6. The method of claim 5, wherein the interior and exterior are rapidly cooled by a convection fan after the test is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911270296.8A CN110926920A (en) | 2019-12-11 | 2019-12-11 | Temperature adjusting device and method for CODmn digestion tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911270296.8A CN110926920A (en) | 2019-12-11 | 2019-12-11 | Temperature adjusting device and method for CODmn digestion tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110926920A true CN110926920A (en) | 2020-03-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911270296.8A Pending CN110926920A (en) | 2019-12-11 | 2019-12-11 | Temperature adjusting device and method for CODmn digestion tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110926920A (en) |
Citations (8)
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|---|---|---|---|---|
| CN102749465A (en) * | 2012-06-26 | 2012-10-24 | 苏州国环环境检测有限公司 | Digestion and colorimetric analysis system for test of standard addition recovery rate |
| CN206369715U (en) * | 2016-11-23 | 2017-08-01 | 深圳市朗石科学仪器有限公司 | A kind of COD measuring systems |
| CN207882048U (en) * | 2018-03-05 | 2018-09-18 | 安徽英凯环境技术有限公司 | A kind of resolution pool device for monitoring water quality on line equipment |
| CN109142021A (en) * | 2018-09-19 | 2019-01-04 | 厦门斯坦道科学仪器股份有限公司 | A kind of technique and its device of combined digestion total phosphorus and total nitrogen |
| CN208443774U (en) * | 2018-07-02 | 2019-01-29 | 江西威睿环保工程有限公司 | A kind of novel C OD automatic detection device |
| CN209055394U (en) * | 2018-09-19 | 2019-07-02 | 厦门斯坦道科学仪器股份有限公司 | A kind of device of combined digestion total phosphorus and total nitrogen |
| CN110346509A (en) * | 2019-08-26 | 2019-10-18 | 上海仪电科学仪器股份有限公司 | A kind of online permanganate index monitor of water quality and detection method |
| CN211504949U (en) * | 2019-12-11 | 2020-09-15 | 上海仪电科学仪器股份有限公司 | Temperature adjusting device for CODmn digestion tank |
-
2019
- 2019-12-11 CN CN201911270296.8A patent/CN110926920A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749465A (en) * | 2012-06-26 | 2012-10-24 | 苏州国环环境检测有限公司 | Digestion and colorimetric analysis system for test of standard addition recovery rate |
| CN206369715U (en) * | 2016-11-23 | 2017-08-01 | 深圳市朗石科学仪器有限公司 | A kind of COD measuring systems |
| CN207882048U (en) * | 2018-03-05 | 2018-09-18 | 安徽英凯环境技术有限公司 | A kind of resolution pool device for monitoring water quality on line equipment |
| CN208443774U (en) * | 2018-07-02 | 2019-01-29 | 江西威睿环保工程有限公司 | A kind of novel C OD automatic detection device |
| CN109142021A (en) * | 2018-09-19 | 2019-01-04 | 厦门斯坦道科学仪器股份有限公司 | A kind of technique and its device of combined digestion total phosphorus and total nitrogen |
| CN209055394U (en) * | 2018-09-19 | 2019-07-02 | 厦门斯坦道科学仪器股份有限公司 | A kind of device of combined digestion total phosphorus and total nitrogen |
| CN110346509A (en) * | 2019-08-26 | 2019-10-18 | 上海仪电科学仪器股份有限公司 | A kind of online permanganate index monitor of water quality and detection method |
| CN211504949U (en) * | 2019-12-11 | 2020-09-15 | 上海仪电科学仪器股份有限公司 | Temperature adjusting device for CODmn digestion tank |
Non-Patent Citations (1)
| Title |
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| 李文等: ""多量程原位水质总磷总氮一体式在线监测仪"", 《发光学报》, vol. 40, no. 7, pages 930 - 940 * |
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Application publication date: 20200327 |