CN203929689U - A kind of device of Fast Measurement solidifying point - Google Patents

A kind of device of Fast Measurement solidifying point Download PDF

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Publication number
CN203929689U
CN203929689U CN201420357706.9U CN201420357706U CN203929689U CN 203929689 U CN203929689 U CN 203929689U CN 201420357706 U CN201420357706 U CN 201420357706U CN 203929689 U CN203929689 U CN 203929689U
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China
Prior art keywords
solidifying point
fast measurement
screw thread
stirrer
mensuration
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Expired - Fee Related
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CN201420357706.9U
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Chinese (zh)
Inventor
陈春玉
黄超明
李毅
卢乔森
肖英
丁亮
李博
谢辉辉
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Southwest Research and Desigin Institute of Chemical Industry
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Southwest Research and Desigin Institute of Chemical Industry
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Abstract

The utility model belongs to thermoanalysis technology field, relate to a kind of substance characteristics determinator, be specially a kind of device of Fast Measurement solidifying point, this device comprises refrigeration Heating Cyclic machine, casing air, includes the mensuration pipe of inertia additive, automatic thread stirrer, platinum resistance temperature sensor, moisture recorder and computing machine with ram pump.The utility model compared with existing kryoscopy instrument apparatus, have quick, sensitive, accuracy is high, good reliability, avoid the advantages such as serious supercooling phenomenon, the mensuration of the solidifying point of the solution system that while being particluarly suitable for low temperature, viscosity is large.

Description

A kind of device of Fast Measurement solidifying point
Technical field
The utility model belongs to thermoanalysis technology field, relates to a kind of substance characteristics determinator, is specially a kind of device of Fast Measurement solidifying point.
background technology
Solidifying point is the important physical and chemical parameter of liquid substance, its value is not only the important indicator of material or product purity, and can also tentatively judge the content of certain component in potpourri, and therefore Accurate Determining solidifying point is very important, its result even relates to application and the popularization to these materials.When the current solidifying point of measuring material, mostly having adopted stirring, is mainly the solidifying point situation on the low side causing for fear of supercooling phenomenon.In patent publication No. CN101339148A, use magnetic stirring apparatus to stir, this alr mode can be avoided occurring cold too large phenomenon because of the too fast test substance that makes of lowering the temperature, but for the large material of low temperature viscosity, adopt magnetic agitation, levels stirs inhomogeneous, be unfavorable for passing warm mass transfer, affect the reliability of determination data.In addition, in GB, do not narrate solidifying point how to measure the material that low temperature viscosity is large yet, expect measurement result accurately, need to design one and comprise the measuring apparatus for solidification point that is applicable to measuring the material that low temperature viscosity is large.
Summary of the invention
The utility model is just for above technical matters, provides that a kind of finding speed is fast, sensitive, accuracy is high, good reliability, can avoid preferably the device of the Fast Measurement solidifying point that serious supercooling phenomenon occurs.
Technical scheme of the present invention is:
A kind of device of Fast Measurement solidifying point, this device comprises refrigeration Heating Cyclic machine, casing air, the mensuration pipe that includes inertia additive, rubber stopper, screw thread stirrer, platinum resistance temperature sensor and moisture recorder with ram pump, in the measurement slot of refrigeration Heating Cyclic machine, insert casing air, in casing air, be inserted in the mensuration pipe that includes inertia additive; Two holes are set on rubber stopper, screw thread stirrer with ram pump is inserted and is included in the mensuration pipe of inertia additive by the hole on rubber stopper, platinum resistance temperature sensor is inserted and is included in the mensuration pipe of inertia additive by the hole on rubber stopper equally, and platinum resistance temperature sensor is connected with moisture recorder
The device of described Fast Measurement solidifying point also comprises computing machine, moisture recorder is connected with computing machine, moisture recorder receives the temperature signal that transmits of platinum resistance temperature sensor, and converts digital signal to and output to computing machine, and computing machine carries out real time record and gathers solidifying point information.
Described casing air outer wall arranges grommet type seals, this ring seal ring outer wall is made up of elastomeric material, good seal performance, frictional resistance are large, and sealing circle can make the to freeze mensuration groove of Heating Cyclic machine is closely connected with casing air, keeps good conduction interfaces.Casing air adopts ground docking mode with measuring pipe, can keep so good conduction interfaces.
In the described mensuration pipe that includes inertia additive, add inertia additive, inertia additive is molecular sieve, zeolite, frosted glass ball or silica gel, the granularity of inertia additive is 0.1~3mm, the interpolation of inertia additive can promote fluid to be measured, especially near the liquid that low temperature viscosity is large crystallize out quickly solidifying point, and be unlikely to occur serious supercooling phenomenon.
The described threaded collar diameter with the screw thread stirrer in the screw thread stirrer of ram pump is 19~21mm, in screw thread stirrer, the upper end of puddler is connected with ram pump, ram pump can drive the stirring up and down automatically, at the uniform velocity of screw thread stirrer, can avoid the artificial error of bringing that stirs, also be specially adapted to the mensuration of the solidifying point of the material that viscosity is large.With the screw thread stirrer of ram pump, this screw thread stirrer is the stirrer of stainless steel stirrer or outer wrapping teflon, can avoid the corrosion such as air, steam, water, organic solvent, increases the service life.
Compared with prior art, the beneficial effects of the utility model are:
(1) this apparatus structure is simple, easy to operate, saves time, saving of labor.
(2) finding speed is faster, sensitive, accuracy is high, good reliability, can well avoid occur
Serious supercooling phenomenon.
(3), due to the screw thread stirrer having adopted with ram pump, this ram pump can drive screw thread to stir
Device stirring up and down automatically, at the uniform velocity, can avoid the artificial error of bringing that stirs, also special
Be not applicable to the mensuration of the solidifying point of the material that viscosity is large.
Brief description of the drawings
Fig. 1 is the crude oil products recorded in the utility model freezing point curve figure under different device is measured;
Fig. 2 is structural representation of the present utility model;
Wherein, 1---refrigeration Heating Cyclic machine, 2---casing air, 3---mensuration pipe, 4---rubber stopper, 5------platinum resistance temperature sensor, 7---moisture recorder, the 8---computing machines of the stirrer, 6 with ram pump.
Embodiment
A kind of device of Fast Measurement solidifying point, this device comprises refrigeration Heating Cyclic machine, casing air, the mensuration pipe that includes inertia additive, rubber stopper, screw thread stirrer, platinum resistance temperature sensor and moisture recorder with ram pump, in the measurement slot of refrigeration Heating Cyclic machine, insert casing air, in casing air, be inserted in the mensuration pipe that includes inertia additive; Two holes are set on rubber stopper, screw thread stirrer with ram pump is inserted and is included in the mensuration pipe of inertia additive by the hole on rubber stopper, platinum resistance temperature sensor is inserted and is included in the mensuration pipe of inertia additive by the hole on rubber stopper equally, and platinum resistance temperature sensor is connected with moisture recorder.The device of described Fast Measurement solidifying point also comprises computing machine, and moisture recorder is connected with computing machine, carries out real time record and gathers solidifying point information.Described casing air outer wall arranges grommet type seals.In the described mensuration pipe that includes inertia additive, add inertia additive, inertia additive is molecular sieve, zeolite, frosted glass ball or silica gel, the granularity of inertia additive is 0.1~3mm, the interpolation of inertia additive can promote fluid to be measured, especially near the liquid that low temperature viscosity is large crystallize out quickly solidifying point, and be unlikely to occur serious supercooling phenomenon.The described threaded collar diameter with the screw thread stirrer in the screw thread stirrer of ram pump is 19~21mm, ram pump can drive the stirring up and down automatically, at the uniform velocity of screw thread stirrer, can avoid the artificial error of bringing that stirs, also be specially adapted to the mensuration of the solidifying point of the material that viscosity is large.With the screw thread stirrer of ram pump, this screw thread stirrer is the stirrer of stainless steel stirrer or outer wrapping teflon, can avoid the corrosion of air, steam, water, organic solvent etc., increases the service life.
Below in conjunction with embodiment, the utility model is described in further detail.
But this should be interpreted as to the scope of the above-mentioned theme of the utility model only limits to following embodiment.
Embodiment 1:
Adopt the device in embodiment to carry out kryoscopy to crude oil products.Pipette the mensuration pipe scale mark place of 7g sample to clean dried with transfer pipet, block and measure phial mouth with rubber stopper, platinum-resistance thermometer probe penetrates rubber stopper to measuring 2/3 place under pipe sample liquid level, and stirrer is inserted and measured in pipe, fixing stirrer is between thermometer and mensuration tube wall, then mensuration pipe is inserted in after casing air, be placed in together again the mensuration slot of refrigeration Heating Cyclic machine, start to stir, 80 revs/min of stir speed (S.S.)s, first sample is cooled to 0 DEG C, stablize after 5 minutes, cryostat temperature-50 DEG C are set, continue cooling, when sample is separated out solid, temperature bottom out, rise to maximum temperature, stop stirring, record sample solidifying point and be-37 DEG C.
Comparative example:
Comparative example adopts the device in CN200982956Y to carry out the kryoscopy of crude oil products, and measurement result is-45 DEG C.
From Fig. 1, freezing point curve contrast, can find out, adopts the device (example 1) in the utility model patent to measure, the not too serious (t of supercooling phenomenon afor undercooling point), solidifying point (t bfor solidifying point) more accurate.

Claims (5)

1. the device of a Fast Measurement solidifying point, it is characterized in that: this device comprises refrigeration Heating Cyclic machine (1), casing air (2), the mensuration pipe (3) that includes inertia additive, rubber stopper (4), screw thread stirrer (5), platinum resistance temperature sensor (6) and moisture recorder (7) with ram pump, in the measurement slot of refrigeration Heating Cyclic machine (1), insert casing air (2), in casing air (2), be inserted in the mensuration pipe (3) that includes inertia additive; Two holes are set on rubber stopper (4), screw thread stirrer (5) with ram pump is inserted and is included in the mensuration pipe (3) of inertia additive by the hole on rubber stopper (4), platinum resistance temperature sensor (6) is inserted and is included in the mensuration pipe (3) of inertia additive by the hole on rubber stopper (4) equally, and platinum resistance temperature sensor (6) is connected with moisture recorder (7).
2. the device of Fast Measurement solidifying point according to claim 1, is characterized in that: the device of described Fast Measurement solidifying point also comprises computing machine (8), and moisture recorder (7) is connected with computing machine (8).
3. the device of Fast Measurement solidifying point according to claim 1, is characterized in that: described casing air (2) outer wall arranges grommet type seals.
4. the device of Fast Measurement solidifying point according to claim 1, is characterized in that: in the described mensuration pipe (3) that includes inertia additive, add inertia additive, the granularity of inertia additive is 0.1~3mm.
5. the device of Fast Measurement solidifying point according to claim 1, is characterized in that: the described threaded collar diameter with the screw thread stirrer in the screw thread stirrer (5) of ram pump is 19~21mm.
CN201420357706.9U 2014-07-01 2014-07-01 A kind of device of Fast Measurement solidifying point Expired - Fee Related CN203929689U (en)

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Application Number Priority Date Filing Date Title
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105842119A (en) * 2016-03-18 2016-08-10 东旭科技集团有限公司 Method for determining viscosity of glass
CN106814099A (en) * 2017-01-04 2017-06-09 中国工程物理研究院化工材料研究所 Freezing point, fusing point or crystalline temperature automatization test system
CN107817264A (en) * 2017-11-27 2018-03-20 蔡智韬 A kind of automatic pour point detector with controllable temperature difference method
CN109060871A (en) * 2018-07-11 2018-12-21 长沙鲜源生物科技有限公司 A kind of cold-storage working substance phase transformation detection device and its method
CN111830076A (en) * 2019-04-19 2020-10-27 中国石油化工股份有限公司 Method and device for detecting crystallization point and/or freezing point

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105842119A (en) * 2016-03-18 2016-08-10 东旭科技集团有限公司 Method for determining viscosity of glass
CN106814099A (en) * 2017-01-04 2017-06-09 中国工程物理研究院化工材料研究所 Freezing point, fusing point or crystalline temperature automatization test system
CN107817264A (en) * 2017-11-27 2018-03-20 蔡智韬 A kind of automatic pour point detector with controllable temperature difference method
CN107817264B (en) * 2017-11-27 2023-10-31 蔡智韬 Automatic inclination point detector by controllable temperature difference method
CN109060871A (en) * 2018-07-11 2018-12-21 长沙鲜源生物科技有限公司 A kind of cold-storage working substance phase transformation detection device and its method
CN109060871B (en) * 2018-07-11 2021-08-17 长沙鲜源生物科技有限公司 Cold storage working medium phase change detection device and method thereof
CN111830076A (en) * 2019-04-19 2020-10-27 中国石油化工股份有限公司 Method and device for detecting crystallization point and/or freezing point
CN111830076B (en) * 2019-04-19 2024-03-12 中国石油化工股份有限公司 Method and device for detecting crystallization point and/or freezing point

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Granted publication date: 20141105