CN104457000A - Refrigerating plant for differential thermal analysis test instrument - Google Patents
Refrigerating plant for differential thermal analysis test instrument Download PDFInfo
- Publication number
- CN104457000A CN104457000A CN201410728308.8A CN201410728308A CN104457000A CN 104457000 A CN104457000 A CN 104457000A CN 201410728308 A CN201410728308 A CN 201410728308A CN 104457000 A CN104457000 A CN 104457000A
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- China
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- communicated
- connecting line
- condenser
- refrigerating plant
- evaporator
- Prior art date
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- 238000004455 differential thermal analysis Methods 0.000 title claims abstract description 22
- 238000012360 testing method Methods 0.000 title abstract description 11
- 239000007788 liquid Substances 0.000 claims description 14
- 230000008676 import Effects 0.000 claims description 2
- 239000003507 refrigerant Substances 0.000 abstract description 17
- 238000001816 cooling Methods 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 6
- 230000006870 function Effects 0.000 abstract description 3
- 238000002844 melting Methods 0.000 abstract description 3
- 230000008018 melting Effects 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 230000009477 glass transition Effects 0.000 abstract 1
- 238000009835 boiling Methods 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000001704 evaporation Methods 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 6
- 238000005057 refrigeration Methods 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000013558 reference substance Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000002076 thermal analysis method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention provides a refrigerating plant for a differential thermal analysis test instrument. A compressor (1) inlet of the refrigerating plant is communicated with a refrigerant storage component (2), and a compressor (1) outlet is communicated with a condenser A (3). The condenser A (3) is communicated with a rectifying tower (4), and the rectifying tower (4) is communicated with a condensing evaporator (5). The condensing evaporator (5) is communicated with an evaporator B (6), and the evaporator B (6) is communicated with the refrigerant storage component (2). A compressor (1) is connected with a control component (7) for controlling the compressor (1). The refrigerating plant selects different refrigerants and can quickly lower the temperature of the differential thermal analysis test instrument to the required temperature, thereby having a great help on testing a lot of substances with low glass transition temperature or substances with low melting points. The refrigerating plant can achieve an effect of fast cooling and also expands the functions of the test instrument used at low temperature.
Description
Technical field
The invention belongs to differential thermal analysis testing equipment technical field, more particularly, relate to a kind of refrigerating plant for differential thermal analysis tester.
Background technology
Differential thermal analysis (DSC) also named differential thermal analysis, is under program temperature controls, the temperature variant technology of temperature difference between measurement of species and primary standard substance (reference substance).It is a kind of important means of research Polymer Materials ' Structure and property relationship.Conventional differential thermal analysis instrument generally makes external water source, lowers the temperature to instrument with running water.Common heat sink relies on running water to realize the cooling of instrument, and summer, coolant-temperature gage was higher, and less than 30 DEG C rate of temperature fall are slow especially, and are difficult to the temperature dropping to less than 20 DEG C.To Water demand thermal characteristics index when about 30 DEG C or lower material, instrument cannot effectively be analyzed.Because instrument uses the mode of running water cooling, to many thermal characteristics indexes when the material of about 30 DEG C is analyzed, thermal analysis curve is not the flex point that performance index cannot be found to change, and be exactly that inflection curves is too precipitous, deformation is not clearly.And summer is along with the rising of environment temperature, the cooling efficiency of running water is had a greatly reduced quality.In addition from the viewpoint of environmental protection and energy saving, use running water cooling, long-term experimental test can cause the waste of a large amount of running water virtually.Cooling efficiency low, make the sample size of same time test analysis be subject to great limitation, analytical work efficiency cannot be promoted effectively.
Summary of the invention
Technical problem to be solved by this invention is: the deficiency existed for prior art, there is provided a kind of structure simple, cooling-down effect block, conventional refrigerant can not only be used for, can also be used for obtaining the lower occasion of cryogenic temperature, thus expanded the scope of application, effectively improve the refrigerating plant for differential thermal analysis tester of refrigeration.
Solve above-described technical problem, the technical scheme that the present invention takes is:
The present invention is a kind of refrigerating plant for differential thermal analysis test, described refrigerating plant comprises compressor, compressor inlet is communicated with cold-producing medium memory unit, compressor outlet is communicated with condenser A, condenser A is communicated with rectifying column, and rectifying column is communicated with condenser/evaporator, and condenser/evaporator is communicated with evaporimeter B, evaporimeter B is communicated with cold-producing medium memory unit, and compressor is connected with the control assembly controlling compressor.
Described refrigerating plant also comprises connecting line I, connecting line I one end is communicated with condenser A, connecting line I other end is communicated with in the middle part of rectifying column after rectifying column again, rectifying column upper end is communicated with condenser/evaporator by connecting line II, refrigerating plant also comprises connecting line III, described connecting line III one end is communicated with rectifier bottoms, and the other end of connecting line III is communicated with condenser/evaporator behind rectifying column upper end again.
Described refrigerating plant also comprises connecting line IV, connecting line V, connecting line IV one end is communicated with condenser/evaporator, connecting line IV other end is connected with reclaim line, and connecting line V one end is communicated with condenser/evaporator, and connecting line V other end is communicated with evaporimeter B, connecting line V sets gradually gas-liquid separator and regenerator, gas-liquid separator is set to the structure near condenser/evaporator, and regenerator is set to the structure near evaporimeter B, and regenerator is communicated with reclaim line.
Described connecting line I arranges choke valve I, connecting line III is arranged choke valve III, connecting line V is arranged choke valve V.
Described choke valve I, choke valve III, choke valve V are connected with control assembly respectively, and described compressor outlet is communicated with condenser A by carrier pipe.
Adopt technical scheme of the present invention, following beneficial effect can be obtained:
Refrigerating plant for differential thermal analysis tester of the present invention, structure is simple, the device of water-cooled is adopted in prior art, be cooled to 30 DEG C from 200 DEG C and generally need about 30-40 minute, and device of the present invention, select different cold-producing mediums, the temperature of differential thermal analysis tester can be down to rapidly the different temperature points between-40 DEG C ~-200 DEG C scopes, some low Tgs of test or low melting point are very helpful.Even the detection under normal temperature, refrigerating plant of the present invention, after debugging, both can reach the effect of fast cooling, and use in temperature range that again can be wider again, the function used under having expanded tester low temperature, can not produce again the situation of water resource waste.Meanwhile, device of the present invention effectively raises the operating efficiency of tester.
Accompanying drawing explanation
Brief description is made to the content expressed by each accompanying drawing of this description and the mark in figure below:
Fig. 1 is the structural representation of the refrigerating plant for differential thermal analysis tester of the present invention;
Reference numeral is: 1, compressor; 2, cold-producing medium memory unit; 3, condenser; 4, rectifying column; 5, condenser/evaporator; 6, evaporimeter; 7, control assembly; 8, connecting line I; 9, connecting line II; 10, connecting line III; 11, connecting line IV; 12, connecting line V; 13, gas-liquid separator; 14, regenerator; 15, carrier pipe; 16, choke valve I; 18, choke valve III; 20, choke valve V; 21, reclaim line.
Detailed description of the invention
Contrast accompanying drawing below, by the description to embodiment, the effect and operation principle etc. of the specific embodiment of the present invention as the mutual alignment between the shape of involved each component, structure, each several part and annexation, each several part are described in further detail:
As shown in Figure 1, the present invention is a kind of refrigerating plant for differential thermal analysis tester, described refrigerating plant comprises compressor 1, compressor 1 import is communicated with cold-producing medium memory unit 2, and compressor 1 outlet is communicated with condenser 3, and condenser 3 is communicated with rectifying column 4, rectifying column 4 is communicated with condenser/evaporator 5, condenser/evaporator 5 is communicated with evaporimeter 6, and evaporimeter 6 is communicated with cold-producing medium memory unit 2, and compressor 1 is connected with the control assembly 7 controlling compressor 1.Arranged by said structure, refrigerant compression in cold-producing medium memory unit is high pressure conditions by compressor, then the cold-producing medium compressed is through condenser cooling condensation, then rectifying column is entered, in rectifying column, the cold-producing medium of mixing exchanges through caloic, is separated into high boiling component and low boiling component two parts.Enter rectifying tower top portion after high boiling component liquid step-down cooling at the bottom of tower, at rectifying column top, a small amount of refrigerant liquid heat absorption evaporation, makes a small amount of condensation of the low boiling point refrigerant outside pipe become liquid, as the phegma of rectifying column.The evaporation of absorbing heat in condenser/evaporator of major part higher boiling cold-producing medium becomes gaseous state.On the other hand, from rectifying column top, low boiling point refrigerant steam is out condensed condenser/evaporator, enters evaporimeter heat absorption evaporation, thus produces refrigeration., after reclaim line is converged, get back to cold-producing medium memory unit 2 with higher boiling refrigerant vapour, then enter compressor after backheat from evaporimeter low-temperature steam out regenerator, thus complete a circulation, start the circulation of the repetition next one.Cooling device of the present invention, structure is simple, and cooling-down effect block, can not only be used for conventional refrigerant, can also be used for obtaining the lower occasion of cryogenic temperature, thus has expanded the scope of application, effectively improves refrigeration.
Described refrigerating plant also comprises connecting line I 8, connecting line I 8 one end is communicated with condenser 3, connecting line I 8 other end is communicated with again with in the middle part of rectifying column 4 after rectifying column 4, rectifying column 4 upper end is communicated with condenser/evaporator 5 by connecting line II 9, refrigerating plant also comprises connecting line III 10, described connecting line III 10 one end is communicated with bottom rectifying column 4, and the other end of connecting line III 10 is communicated with condenser/evaporator 5 behind rectifying column 4 upper end again.
Described refrigerating plant also comprises connecting line IV 11, connecting line V 12, connecting line IV 11 one end is communicated with condenser/evaporator 5, connecting line IV 11 other end is connected with reclaim line 21, connecting line V 12 one end is communicated with condenser/evaporator 5, connecting line V 12 other end is communicated with evaporimeter B6, connecting line V 12 sets gradually gas-liquid separator 13 and regenerator 14, gas-liquid separator 13 is set to the structure near condenser/evaporator 5, regenerator 14 is set to the structure near evaporimeter B6, and regenerator 14 is communicated with reclaim line 21.
Described connecting line I 8 arranges choke valve I 16, connecting line III 10 is arranged choke valve III 18, connecting line V 12 is arranged choke valve V 20.
Described choke valve I 16, choke valve III 18, choke valve V 20 are connected with control assembly 7 respectively, and described compressor 1 is exported and is communicated with condenser 3 by carrier pipe 15.
Refrigerating plant of the present invention, operation principle and the course of work as described below:
Described compressor 1 is by the gaseous state mix refrigerant boil down to high pressure conditions in cold-producing medium memory unit 2, condenser 3 is transported to through carrier pipe 15, after condenser 3 cooling condensation, mix refrigerant enters further heat release bottom rectifying column 4 through connecting line I 8, in choke valve I 16 on connecting line I 8 a little after step-down, enter rectifying column 4, in rectifying column 4, mix refrigerant exchanges through caloic, is separated into high boiling component and low boiling component two parts.High boiling component liquid at the bottom of rectifying column 4 tower is after the choke valve III 18 reducing pressure by regulating flow cooling on connecting line III 10, enter rectifying column 4 top, at rectifying column 4 top, a small amount of refrigerant liquid heat absorption evaporation, the a small amount of condensation of low boiling point refrigerant outside connecting line III 10 pipe is made to become liquid, as the phegma of rectifying column, flow back to reclaim line 21 from connecting line IV 11.The evaporation of absorbing heat in condenser/evaporator 5 of major part higher boiling cold-producing medium becomes gaseous state.On the other hand, from rectifying column 4 top, low boiling point refrigerant steam is out condensed condenser/evaporator 5, through connecting line V 12, successively by after gas-liquid separator 13, regenerator 14, enter the choke valve V 20 on connecting line V 12, in choke valve V 20 after step-down cooling, enter evaporimeter 6 heat absorption evaporation, thus produce refrigeration.From evaporimeter low-temperature steam out, in regenerator after backheat, after converging in reclaim line 21 with higher boiling refrigerant vapour, get back to cold-producing medium memory unit 2, again enter compressor 1, thus complete a circulation, next circulation can be started, realize continuing refrigeration, thus meet the refrigeration demand of tester.
Described choke valve I 16, choke valve III 18, choke valve V 20 are connected with control assembly 7 respectively, and described compressor 1 is exported and is communicated with condenser A3 by carrier pipe 15.
Refrigerating plant for differential thermal analysis tester of the present invention, structure is simple, the device of water-cooled is adopted in prior art, be cooled to 30 DEG C from 200 DEG C and generally need about 30-40 minute, and device of the present invention, select different cold-producing mediums, the temperature of differential thermal analysis tester can be down to rapidly the different temperature points between-40 DEG C ~-200 DEG C scopes, some low Tgs of test or low melting point are very helpful.Even the detection under normal temperature, refrigerating plant of the present invention, after debugging, both can reach the effect of fast cooling, and use in temperature range that again can be wider again, the function used under having expanded tester low temperature, can not produce again the situation of water resource waste.Meanwhile, device of the present invention effectively raises the operating efficiency of tester.
Above by reference to the accompanying drawings to invention has been exemplary description; the concrete realization of obvious the present invention is not subject to the restrictions described above; as long as have employed the various improvement that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasions, all in protection scope of the present invention without to improve.
Claims (5)
1. the refrigerating plant for differential thermal analysis tester, it is characterized in that: described refrigerating plant comprises compressor (1), compressor (1) import is communicated with cold-producing medium memory unit (2), compressor (1) outlet is communicated with condenser A (3), condenser A (3) is communicated with rectifying column (4), rectifying column (4) is communicated with condenser/evaporator (5), condenser/evaporator (5) is communicated with evaporimeter B (6), evaporimeter B (6) is communicated with cold-producing medium memory unit (2), compressor (1) is connected with the control assembly (7) controlling compressor (1).
2. the refrigerating plant for differential thermal analysis tester according to claim 1, it is characterized in that: described refrigerating plant also comprises connecting line I (8), connecting line I (8) one end is communicated with condenser A (3), connecting line I (8) other end is communicated with rectifying column (4) middle part after rectifying column (4) again, rectifying column (4) upper end is communicated with condenser/evaporator (5) by connecting line II (9), refrigerating plant also comprises connecting line III (10), described connecting line III (10) one end is communicated with rectifying column (4) bottom, the other end of connecting line III (10) is communicated with condenser/evaporator (5) behind rectifying column (4) upper end again.
3. the refrigerating plant for differential thermal analysis tester according to claim 2, it is characterized in that: described refrigerating plant also comprises connecting line IV (11), connecting line V (12), connecting line IV (11) one end is communicated with condenser/evaporator (5), connecting line IV (11) other end is connected with reclaim line (21), connecting line V (12) one end is communicated with condenser/evaporator (5), connecting line V (12) other end is communicated with evaporimeter B (6), connecting line V (12) sets gradually gas-liquid separator (13) and regenerator (14), gas-liquid separator (13) is set to the structure near condenser/evaporator (5), regenerator (14) is set to the structure near evaporimeter B (6), regenerator (14) is communicated with reclaim line (21).
4. the refrigerating plant for differential thermal analysis tester according to claim 3, it is characterized in that: described connecting line I (8) arranges choke valve I (16), connecting line III (10) is arranged choke valve III (18), connecting line V (12) is arranged choke valve V (20).
5. the refrigerating plant for differential thermal analysis tester according to claim 4, it is characterized in that: described choke valve I (16), choke valve III (18), choke valve V (20) are connected with control assembly (7) respectively, described compressor (1) outlet is communicated with condenser A (3) by carrier pipe (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410728308.8A CN104457000B (en) | 2014-12-04 | 2014-12-04 | A kind of refrigerating plant for differential thermal analysis tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410728308.8A CN104457000B (en) | 2014-12-04 | 2014-12-04 | A kind of refrigerating plant for differential thermal analysis tester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104457000A true CN104457000A (en) | 2015-03-25 |
| CN104457000B CN104457000B (en) | 2017-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410728308.8A Active CN104457000B (en) | 2014-12-04 | 2014-12-04 | A kind of refrigerating plant for differential thermal analysis tester |
Country Status (1)
| Country | Link |
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| CN (1) | CN104457000B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002006803A1 (en) * | 2000-07-13 | 2002-01-24 | Igc-Apd Cryogenics, Inc. | Cooling system for thermal analysis |
| US6578367B1 (en) * | 2001-03-02 | 2003-06-17 | Ta Instruments-Waters Llc | Liquid nitrogen cooling system |
| CN101487806A (en) * | 2009-02-20 | 2009-07-22 | 中山大学 | DSC meter with visualization function |
| CN201615678U (en) * | 2010-04-02 | 2010-10-27 | 中山大学 | Vacuum freeze-drying device with DSC and microstructure observation function |
| US20140131005A1 (en) * | 2012-10-25 | 2014-05-15 | Noah Precision, Llc | Temperature control system for electrostatic chucks and electrostatic chuck for same |
| CN204329380U (en) * | 2014-12-04 | 2015-05-13 | 安徽神剑新材料股份有限公司 | For the refrigerating plant of differential thermal analysis tester |
-
2014
- 2014-12-04 CN CN201410728308.8A patent/CN104457000B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002006803A1 (en) * | 2000-07-13 | 2002-01-24 | Igc-Apd Cryogenics, Inc. | Cooling system for thermal analysis |
| US6578367B1 (en) * | 2001-03-02 | 2003-06-17 | Ta Instruments-Waters Llc | Liquid nitrogen cooling system |
| CN101487806A (en) * | 2009-02-20 | 2009-07-22 | 中山大学 | DSC meter with visualization function |
| CN201615678U (en) * | 2010-04-02 | 2010-10-27 | 中山大学 | Vacuum freeze-drying device with DSC and microstructure observation function |
| US20140131005A1 (en) * | 2012-10-25 | 2014-05-15 | Noah Precision, Llc | Temperature control system for electrostatic chucks and electrostatic chuck for same |
| CN204329380U (en) * | 2014-12-04 | 2015-05-13 | 安徽神剑新材料股份有限公司 | For the refrigerating plant of differential thermal analysis tester |
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| Publication number | Publication date |
|---|---|
| CN104457000B (en) | 2017-06-06 |
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