CN104457000B - A kind of refrigerating plant for differential thermal analysis tester - Google Patents
A kind of refrigerating plant for differential thermal analysis tester Download PDFInfo
- Publication number
- CN104457000B CN104457000B CN201410728308.8A CN201410728308A CN104457000B CN 104457000 B CN104457000 B CN 104457000B CN 201410728308 A CN201410728308 A CN 201410728308A CN 104457000 B CN104457000 B CN 104457000B
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- connecting line
- evaporator
- condenser
- refrigerating plant
- compressor
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- 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
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- 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 present invention provides a kind of refrigerating plant for being applied to differential thermal analysis test equipment technical field, compressor (1) import of described refrigerating plant is connected with refrigerant memory unit (2), compressor (1) outlet is connected with condenser A (3), condenser A (3) is connected with rectifying column (4), rectifying column (4) is connected with condenser/evaporator (5), condenser/evaporator (5) is connected with evaporator B (6), evaporator B (6) is connected with refrigerant memory unit (2), compressor (1) is connected with the control unit (7) of control compressor (1), refrigerating plant of the present invention, the different refrigerant of selection, the temperature of differential thermal analysis tester can rapidly be dropped to needs temperature, it is very helpful for testing some low Tgs or low melting point.Refrigerating plant of the invention can both reach the effect of fast cooling, and the function of being used under tester low temperature has been expanded again.
Description
Technical field
It is to be related to one kind for differential thermal analysis more specifically the invention belongs to differential thermal analysis test equipment technical field
The refrigerating plant of tester.
Background technology
Differential thermal analysis (DSC) also named differential thermal analysis, is measurement of species and primary standard substance (reference under program temperature control
Thing) between the technology that varies with temperature of temperature difference.It is a kind of important means for studying Polymer Materials ' Structure and property relationship.
Conventional differential thermal analysis instrument typically makes external water source, and instrument is lowered the temperature with running water.Common heat sink is by originally
Water realizes the cooling of instrument, and summer coolant-temperature gage is higher, and less than 30 DEG C rate of temperature fall are especially slow, and be difficult to drop to less than 20 DEG C
Temperature.To needing analysis thermal characteristics index in 30 DEG C or so or lower of material, instrument cannot be analyzed effectively.Cause
The mode that instrument is lowered the temperature using running water, to many thermal characteristics indexes when 30 DEG C or so of material is analyzed, heat analysis are bent
Line is not the flex point that cannot find performance index change, is exactly excessively precipitous inflection curves, and deformation is not apparent.And summer with
The rising of environment temperature, the cooling efficiency of running water is had a greatly reduced quality.In addition from from the aspect of environmental protection and energy saving, dropped using running water
Temperature, long-term experimental test can virtually cause the waste of substantial amounts of running water.Cooling efficiency it is low so that same time survey
The sample size for trying analysis is subject to great limitation, and analysis operating efficiency cannot be lifted effectively.
The content of the invention
The technical problems to be solved by the invention are：In view of the shortcomings of the prior art, there is provided a kind of simple structure, drop
Temp effect block, is used not only for conventional refrigerant, can be also used for obtaining the relatively low occasion of cryogenic temperature, so as to expanded use
Scope, effectively increases the refrigerating plant for differential thermal analysis tester of refrigeration.
Techniques discussed above is solved the problems, such as, the technical scheme that the present invention takes is：
The present invention is a kind of refrigerating plant for differential thermal analysis test, and described refrigerating plant includes compressor, compression
Machine import is connected with refrigerant memory unit, and compressor outlet is connected with condenser A, and condenser A is connected with rectifying column, rectifying column
Connected with condenser/evaporator, condenser/evaporator is connected with evaporator B, evaporator B is connected with refrigerant memory unit, compressor with
Control the control unit connection of compressor.
Described refrigerating plant also includes connecting line I, and the one end of connecting line I connects with condenser A, and connecting line I is another
By being connected with rectifying column middle part again after rectifying column, rectifying column upper end is connected by connecting line II with condenser/evaporator for one end,
Refrigerating plant also includes connecting line III, and described one end of connecting line III connects with rectifier bottoms, connecting line III it is another
One end with condenser/evaporator by connecting again behind rectifying column upper end.
Described refrigerating plant also includes connecting line IV, connecting line V, the one end of connecting line IV and condenser/evaporator
Connection, the other end of connecting line IV is connected with recovery pipe, and the one end of connecting line V connects with condenser/evaporator, connecting line V
The other end is connected with evaporator B, and gas-liquid separator and regenerator are set gradually on connecting line V, and gas-liquid separator is set to lean on
The structure of nearly condenser/evaporator, regenerator is disposed proximate to the structure of evaporator B, and regenerator is connected with recovery pipe.
Choke valve I is set on described connecting line I, choke valve III is set on connecting line III, set on connecting line V
Put choke valve V.
Described choke valve I, choke valve III, choke valve V are connected with control unit respectively, and described compressor outlet leads to
Delivery pipe is crossed to be connected with condenser A.
Using technical scheme, following beneficial effect can be obtained：
Refrigerating plant for differential thermal analysis tester of the present invention, simple structure, in the prior art using water
Cold device, 30 DEG C is cooled to from 200 DEG C and is generally required 30-40 minutes or so, and device of the invention, select different refrigeration
Agent, the different temperature points that can the temperature of differential thermal analysis tester is rapidly decreased between -40 DEG C~-200 DEG C scopes, for surveying
Try some low Tgs or low melting point is very helpful.Even the detection under normal temperature, refrigeration dress of the invention
Put by after debugging, can both reach the effect of fast cooling, used within the scope of temperature that again can be wider again, expanded tester
The function of being used under device low temperature, will not produce the situation of water resource waste again.Meanwhile, device of the invention effectively raises survey
The operating efficiency of test instrument.
Brief description of the drawings
Brief description is made to the content expressed by each accompanying drawing of this specification 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 is：1st, compressor；2nd, refrigerant memory unit；3rd, condenser；4th, rectifying column；5th, condenser/evaporator；
6th, evaporator；7th, control unit；8th, connecting line I；9th, connecting line II；10th, connecting line III；11st, connecting line IV；12、
Connecting line V；13rd, gas-liquid separator；14th, regenerator；15th, delivery pipe；16th, choke valve I；18th, choke valve III；20th, choke valve
Ⅴ；21st, recovery pipe.
Specific embodiment
Below against accompanying drawing, by the description to embodiment, to specific embodiment of the invention such as involved each structure
The shape of part, the mutual alignment between construction, each several part and annexation, the effect of each several part and operation principle etc. are made further
Detailed description：
As shown in Figure 1, the present invention is a kind of refrigerating plant for differential thermal analysis tester, described refrigerating plant
Including compressor 1, the import of compressor 1 is connected with refrigerant memory unit 2, and the outlet of compressor 1 is connected with condenser 3, condenser 3
Connected with rectifying column 4, rectifying column 4 is connected with condenser/evaporator 5, condenser/evaporator 5 is connected with evaporator 6, evaporator 6 with refrigeration
Agent memory unit 2 is connected, and compressor 1 is connected with the control unit 7 of control compressor 1.Set by said structure, compressor will
Refrigerant compression in refrigerant memory unit is high pressure conditions, and the refrigerant for then compressing is cooled down by condenser and condensed, so
Enter rectifying column afterwards, in rectifying column, the refrigerant of mixing is exchanged through caloic, is separated into high boiling component and low boiling component two
Part.Enter rectifying tower top portion, at the top of rectifying column, a small amount of refrigerant liquid after the high boiling component liquid step-down cooling of bottom of towe
Body heat absorption evaporation, condensation turns into liquid on a small quantity to make the low boiling point refrigerant outside pipe, used as the phegma of rectifying column.Most of height boiling
Point refrigerant absorbs heat evaporation as gaseous state in condenser/evaporator.On the other hand, the low boiling refrigeration from rectifying column top out
Agent steam is condensed in condenser/evaporator, is absorbed heat into evaporator and evaporated, so as to produce refrigeration.From evaporator out
Low-temperature steam returns to refrigerant memory unit with higher boiling refrigerant vapour after backheat in regenerator after recovery pipe is converged
2, compressor is entered back into, so as to complete a circulation, start to repeat next circulation.Cooling device of the invention, simple structure,
Cooling-down effect block, is used not only for conventional refrigerant, can be also used for obtaining the relatively low occasion of cryogenic temperature, so as to expanded make
With scope, refrigeration is effectively increased.
Described refrigerating plant also includes connecting line I 8, and the one end of connecting line I 8 connects with condenser 3, connecting line I 8
By being connected with the middle part of rectifying column 4 again after rectifying column 4, the upper end of rectifying column 4 passes through connecting line II 9 and condenser/evaporator to the other end
5 connections, refrigerating plant also includes connecting line III 10, and described one end of connecting line III 10 connects with the bottom of rectifying column 4, connects
The other end of pipeline III 10 with condenser/evaporator 5 by connecting again behind the upper end of rectifying column 4.
Described refrigerating plant also includes connecting line IV 11, connecting line V 12, the one end of connecting line IV 11 and condensation
Evaporator 5 is connected, and the other end of connecting line IV 11 is connected with recovery pipe 21, the one end of connecting line V 12 and condenser/evaporator 5
Connection, the other end of connecting line V 12 is connected with evaporator B6, gas-liquid separator 13 is set gradually on connecting line V 12 and is returned
Hot device 14, gas-liquid separator 13 is disposed proximate to the structure of condenser/evaporator 5, and regenerator 14 is disposed proximate to the knot of evaporator B6
Structure, regenerator 14 is connected with recovery pipe 21.
Choke valve I 16 is set on described connecting line I 8, choke valve III 18, connecting line are set on connecting line III 10
Choke valve V 20 is set on V 12.
Described choke valve I 16, choke valve III 18, choke valve V 20 is connected with control unit 7 respectively, described compressor
1 outlet is connected by delivery pipe 15 with condenser 3.
Refrigerating plant of the invention, operation principle and the course of work are as described below：
Described compressor 1 by the gaseous state mix refrigerant boil down to high pressure conditions in refrigerant memory unit 2, through conveying
Pipe 15 is transported to condenser 3, and after the cooling condensation of condensed device 3, mix refrigerant enters through connecting line I 8 into the bottom of rectifying column 4
One step heat release, after being somewhat depressured in the choke valve I 16 on connecting line I 8, into rectifying column 4, in rectifying column 4, mixing system
Cryogen is exchanged through caloic, is separated into high boiling component and low boiling component two parts.In the high boiling component liquid of the bottom of towe of rectifying column 4
It is few at the top of rectifying column 4 into the top of rectifying column 4 after body is lowered the temperature through the reducing pressure by regulating flow of choke valve III 18 on connecting line III 10
Amount refrigerant liquid heat absorption evaporation, condensation turns into liquid on a small quantity to make the low boiling point refrigerant outside the pipe of connecting line III 10, used as essence
The phegma of tower is evaporated, recovery pipe 21 is flowed back to from connecting line IV 11.Most of higher boiling refrigerant is inhaled in condenser/evaporator 5
Thermal evaporation turns into gaseous state.On the other hand, the quilt in condenser/evaporator 5 of the low boiling point refrigerant steam from the top of rectifying column 4 out
Condensation, through connecting line V 12, after passing sequentially through gas-liquid separator 13, regenerator 14, the throttling on connecting line V 12
Valve V 20, after being depressured cooling in choke valve V 20, absorbs heat into evaporator 6 and evaporates, so as to produce refrigeration.From evaporator
Low-temperature steam out, after backheat in regenerator, after converging in recovery pipe 21 with higher boiling refrigerant vapour, returns to system
Cryogen memory unit 2, is again introduced into compressor 1, so as to complete a circulation, can start next circulation, realizes lasting system
It is cold, so as to meet the refrigeration demand of tester.
Described choke valve I 16, choke valve III 18, choke valve V 20 is connected with control unit 7 respectively, described compressor
1 outlet is connected by delivery pipe 15 with condenser A3.
Refrigerating plant for differential thermal analysis tester of the present invention, simple structure, in the prior art using water
Cold device, 30 DEG C is cooled to from 200 DEG C and is generally required 30-40 minutes or so, and device of the invention, select different refrigeration
Agent, the different temperature points that can the temperature of differential thermal analysis tester is rapidly decreased between -40 DEG C~-200 DEG C scopes, for surveying
Try some low Tgs or low melting point is very helpful.Even the detection under normal temperature, refrigeration dress of the invention
Put by after debugging, can both reach the effect of fast cooling, used within the scope of temperature that again can be wider again, expanded tester
The function of being used under device low temperature, will not produce the situation of water resource waste again.Meanwhile, device of the invention effectively raises survey
The operating efficiency of test instrument.
Exemplary description is carried out to the present invention above in conjunction with accompanying drawing, it is clear that concrete implementation of the present invention is not by above-mentioned
The limitation of mode, if the various improvement that method of the present invention design and technical scheme are carried out are employed, or it is not improved by this
The design of invention and technical scheme directly apply to other occasions, within the scope of the present invention.
Claims (4)
1. a kind of refrigerating plant for differential thermal analysis tester, described refrigerating plant includes compressor (1), compressor
(1) import is connected with refrigerant memory unit (2), and compressor (1) outlet is connected with condenser (3), condenser (3) and rectifying column
(4) connect, rectifying column (4) connects with condenser/evaporator (5), condenser/evaporator (5) is connected with evaporator (6), evaporator (6) and
Refrigerant memory unit (2) is connected, and compressor (1) is connected with the control unit (7) of control compressor (1)；
It is characterized in that：Described refrigerating plant also includes connecting line I (8), and the one end of connecting line I (8) goes out with condenser (3)
Mouthful connection, the other end of connecting line I (8) by being connected with rectifying column (4) centre inlet again after rectifying column (4), on rectifying column (4)
Mouth is brought out by connecting line II (9) and condenser/evaporator (5) inlet communication, refrigerating plant also includes connecting line III (10),
Described one end of connecting line III (10) connects with rectifying column (4) bottom, and the other end of connecting line III (10) is by rectifying column
(4) behind upper end again with condenser/evaporator (5) inlet communication.
2. the refrigerating plant for differential thermal analysis tester according to claim 1, it is characterised in that：Described refrigeration
Device also includes connecting line IV (11), and connecting line V (12), one end of connecting line IV (11) exports with condenser/evaporator (5)
Connection, the other end of connecting line IV (11) is connected with recovery pipe (21), the one end of connecting line V (12) and condenser/evaporator (5)
Outlet, the other end of connecting line V (12) is connected with evaporator (6), and gas-liquid separation is set gradually on connecting line V (12)
Device (13) and regenerator (14), gas-liquid separator (13) are disposed proximate to the structure of condenser/evaporator (5), and regenerator (14) is set
It is the structure for being close to evaporator (6), regenerator (14) is connected with recovery pipe (21).
3. the refrigerating plant for differential thermal analysis tester according to claim 1, it is characterised in that：Described connection
Choke valve I (16) is set on pipeline I (8), choke valve III (18) is set on connecting line III (10), set on connecting line V (12)
Put choke valve V (20).
4. the refrigerating plant for differential thermal analysis tester according to claim 3, it is characterised in that：Described throttling
Valve I (16), choke valve III (18), choke valve V (20) are connected with control unit (7) respectively, and described compressor (1) outlet is logical
Delivery pipe (15) is crossed to be connected with condenser (3).
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 CN104457000A (en) | 2015-03-25 |
| CN104457000B true CN104457000B (en) | 2017-06-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410728308.8A Active CN104457000B (en) | 2014-12-04 | 2014-12-04 | A kind of refrigerating plant for differential thermal analysis tester |
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| CN (1) | CN104457000B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6626567B2 (en) * | 2000-07-13 | 2003-09-30 | Mikhail Boiarski | Cooling system for thermal analysis |
| US6578367B1 (en) * | 2001-03-02 | 2003-06-17 | Ta Instruments-Waters Llc | Liquid nitrogen cooling system |
| CN101487806B (en) * | 2009-02-20 | 2011-06-08 | 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 functions |
| US9679792B2 (en) * | 2012-10-25 | 2017-06-13 | 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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| CN104457000A (en) | 2015-03-25 |
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