CN201965104U - DTA/DSC measuring and heating device - Google Patents
DTA/DSC measuring and heating device Download PDFInfo
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- CN201965104U CN201965104U CN2010206527082U CN201020652708U CN201965104U CN 201965104 U CN201965104 U CN 201965104U CN 2010206527082 U CN2010206527082 U CN 2010206527082U CN 201020652708 U CN201020652708 U CN 201020652708U CN 201965104 U CN201965104 U CN 201965104U
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Abstract
The utility model relates to a DTA/DSC (Differential Thermal Analysis / Differential Scanning Caborimetry) measuring and heating device, which mainly comprises a middle cover, an inner cover, a furnace shell assembly, a sample stage assembly, a furnace core assembly housing, a furnace core assembly, a furnace core assembly retainer ring, a hard hat, a flange connecting ring, a cooling flange, a vent tube and a support, wherein the furnace shell assembly is formed by connecting a furnace shell, a furnace shell upper inner ring, and a furnace shell lower inner ring in press fit, and a plurality circles of air current passages are formed between the furnace shell, the furnace shell upper inner ring and the furnace shell lower inner ring; and the furnace core assembly is formed by nickel chromium heating wires bonded through inorganic bonder and wound on an alumina furnace core. By adopting the device, the gases entering the sample area are sufficiently preheated, the influences of the flowing-in gases on the sample temperature are greatly reduced, the temperature in the sample testing area is ensured to be stable, and the measuring precision is improved; and the device has the advantages of simple structure, convenience for assembling, excellent heat stability, precise measurement and high sensitivity, and is suitable for batch production and application.
Description
Technical field
The utility model relates to a kind of thermal measurement and heating arrangement of adding, and particularly a kind of DTA/DSC measures and heating arrangement.
Background technology
Add thermal measurement and heating arrangement, what use often on the DTA/DSC thermal analyzer at present is that a kind of sample holder and heating furnace body are relatively independent; The measurement and the heating arrangement in the straight-through sample measurement zone of snorkel.Its primary structure is with the basic manufacturing materials of stainless steel as heating furnace body; The support column that sample holder is made by alumina material supports and is independent of body of heater and is fixed on middle position; Snorkel is directly by outer straight-through sample area.There are following problem in the measurement of this structure and heating arrangement: 1. with the manufacturing materials of stainless steel as heating furnace body, its thermal inertia is bigger, and heat conductivity is not fine, causes difficulty to accurate temperature controlling with to the Accurate Analysis of sample.2. the sample holder that supports of the support column of being made as material by aluminium oxide installs and fixes difficulty, and consistance is poor, causes the uncertainty of sample analysis easily.3. snorkel influences the stable of sample area temperature directly by the ventilating mode of outer straight-through sample area.
The utility model content
It is good, can accurate temperature controlling and can the DTA/DSC that sample carry out Accurate Analysis be measured and heating arrangement that the technical problems to be solved in the utility model provides a kind of heating furnace body heat-conductive characteristic, this device makes the gas that enters sample area obtain sufficient preheating, reduced the influence of inflow gas greatly to sample temperature, guarantee the stable of sample test regional temperature, improved measuring accuracy, have simple in structure, easy to assembly, good heat stability, accurate, the highly sensitive advantage of measurement simultaneously, be suitable for producing in enormous quantities and using.
For solving the problems of the technologies described above, a kind of DTA/DSC measures and heating arrangement, mainly by middle cover, inner cap, furnace shell assembly, sample stage assembly, combustion chamber assembly outer cover, combustion chamber assembly, combustion chamber assembly ring washer, piece together emit, flange clamping ring, cooling flange, snorkel, pillar constitute; Described sample stage assembly is made up of by laser spot welding sample stage, brace, E type thermocouple wire, and this sample stage assembly is arranged on combustion chamber assembly and furnace shell assembly central authorities; Described combustion chamber assembly outer cover is nested with in combustion chamber assembly and furnace shell assembly outside; Described furnace shell assembly is connected with cooling flange by the flange clamping ring with the combustion chamber assembly, and described cooling flange is fixedlyed connected with pillar.
Described furnace shell assembly is formed by connecting by being press-fitted by inner ring under inner ring, the furnace shell on furnace shell, the furnace shell; Described furnace shell is divided into furnace shell and following furnace shell by a thicker dividing plate with it, form the first lap gas channel on the described furnace shell between the upper wall of the sidewall of inner ring and last furnace shell, dividing plate, form the second circle gas channel under the described furnace shell between the lower wall of the sidewall of inner ring and following furnace shell, dividing plate, on described dividing plate, also dig a clear opening is arranged, the described first lap gas channel of this clear opening conducting and the second circle gas channel, thus the multi-turn gas channel formed on the furnace shell, furnace shell under inner ring, the furnace shell between the inner ring; Described snorkel is communicated with the second circle gas channel.
Described combustion chamber assembly is bondd and is wrapped on the aluminium oxide combustion chamber by inorganic binder by the nickel chromium triangle heater strip and makes.
Said apparatus, wherein on furnace shell, the furnace shell under inner ring, the furnace shell inner ring be that 99.99% Ag material is made by purity.
Said apparatus, wherein the aluminium oxide combustion chamber is that 99% alumina material is made by purity.
Said apparatus, wherein the nickel chromium triangle heater strip is made by the nickel-chrome material.
Said apparatus, wherein combustion chamber assembly outer cover is made by the 1Cr18Ni9Ti material.
Said apparatus, wherein sample stage is made by the constantan material.
Said apparatus, wherein the flange clamping ring, piece together emit, cooling flange made by the Ni201 material.
Compared with prior art, the utility model has the advantages that:
1, the utility model forms the multi-turn airflow line by inner ring under inner ring, the furnace shell on furnace shell, the furnace shell by being press-fitted the body of heater inside that forms, make the gas that enters sample area obtain sufficient preheating, reduced the influence of inflow gas greatly to sample temperature, guarantee the stable of sample test regional temperature, improved measuring accuracy; The furnace shell assembly is to be that 99.99% Ag material is made through Precision Machining with purity, and heat-conductive characteristic that it is good and thermal stability can satisfy the demand that this device is accurately measured sample fully.
2, the utility model adopts the technological process of inorganic binder by special processing technology and science to make aluminium oxide combustion chamber, the nickel chromium triangle heater strip formation heating unit that is assembled together effectively reliably, has improved the efficiency of heating surface and thermal stability.
Description of drawings
Fig. 1 is the structural representation of the utility model DTA/DSC measurement and heating arrangement.
Among the figure: 1. middle cover, 2. inner cap, 3. furnace shell assembly, 3-1. furnace shell, 3-2. inner ring on the furnace shell, inner ring under the 3-3. furnace shell, 4. sample stage assembly, 4-1. sample stage, 4-2. brace, 4-3.E type thermocouple wire, 5. combustion chamber assembly outer cover, 6. combustion chamber assembly, 6-1. the aluminium oxide combustion chamber, 6-2. nickel chromium triangle heater strip, 6-3. inorganic binder, 7. combustion chamber assembly ring washer is 8. pieced together and is emitted, 9. the flange clamping ring, 10. cooling flange, 11. snorkels, 12. pillars.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, a kind of DTA/DSC measures and heating arrangement, can be applicable to the DTA/DSC thermal analyzer.Under program temperature control, measure temperature difference or the temperature variant state of energy difference between measured matter and the reference substance, with the chemistry or the physical characteristics of amalyzing substances.This DTA/DSC measure and heating arrangement mainly by middle cover 1, inner cap 2, furnace shell assembly 3, sample stage assembly 4, combustion chamber assembly outer cover 5, combustion chamber assembly 6, combustion chamber assembly ring washer 7, piece together emit 8, flange clamping ring 9, cooling flange 10, snorkel 11, pillar 12 constitute; Described sample stage assembly 4 is made up of by laser spot welding sample stage 4-1, brace 4-2, E type thermocouple wire 4-3, and this sample stage assembly 4 is arranged on combustion chamber assembly 6 and furnace shell assembly 3 central authorities; Described combustion chamber assembly outer cover 5 is nested with in combustion chamber assembly 6 and furnace shell assembly 3 outsides; Described furnace shell assembly 3 is connected with cooling flange 10 by flange clamping ring 9 with combustion chamber assembly 6, and described cooling flange 10 is fixedlyed connected with pillar 12.
Described furnace shell assembly 3 is formed by connecting by being press-fitted by inner ring 3-3 under inner ring 3-2, the furnace shell on furnace shell 3-1, the furnace shell; Described furnace shell 3-1 is divided into furnace shell and following furnace shell by a thicker dividing plate with it, form the first lap gas channel on the described furnace shell between the upper wall of the sidewall of inner ring 3-2 and last furnace shell, dividing plate, form the second circle gas channel under the described furnace shell between the lower wall of the sidewall of inner ring 3-3 and following furnace shell, dividing plate, on described dividing plate, also dig a clear opening is arranged, the described first lap gas channel of this clear opening conducting and the second circle gas channel, thus the multi-turn gas channel formed on the furnace shell 3-1, furnace shell under inner ring 3-2, the furnace shell between the inner ring 3-3; Described snorkel 11 is communicated with the second circle gas channel.
Described combustion chamber assembly 6 is bondd by inorganic binder 6-3 and is wrapped in aluminium oxide combustion chamber 6-1 by nickel chromium triangle heater strip 6-2 and upward makes.
During instrument test, nickel chromium triangle heater strip 6-2 in the combustion chamber assembly 6 heating under program temperature control, heat is passed through aluminium oxide combustion chamber 6-1, furnace shell assembly 3 mainly forms a temperature province in heat conducting mode in body of heater, again by under the sample stage assembly 4 many to temperature thermocouple to temperature effectively and accurate control has guaranteed the stability and the accuracy of sample test regional temperature; Sample stage 4-1 is a symmetrical structure in the sample stage assembly 4, and be to adopt the good constantan of heat conductivility to make, E type thermocouple wire 4-3 under it also is a symmetrical structure, so just can be under program temperature control temperature variant energy difference (DSC) and carry out corresponding data processing and analysis between temperature variant temperature difference (DTA) or measuring samples and the reference substance between measuring samples and the reference substance effectively reliably by electronic technology and computer technology.
Critical component sample stage assembly 4 of the present utility model is to be made through special processing mode by two kinds of materials, the sample stage product platform 4-1 of upper end adopts the constantan material to form through Precision Machining, when guaranteeing that two sample stage have good symmetry, make it reach suitable flatness and surface smoothness, excellent contact is arranged with it to guarantee the sample vessel; By the nickel chromium triangle material through the special brace 4-2 that is processed into, E type thermocouple wire 4-3 axle by the accurate spot welding of laser method and sample stage 4-1 to connect and compose symmetry very good, the high thermopair of sensitivity satisfies measurement requirement fully.
Furnace shell assembly 3 of the present utility model is to be that 99.99% Ag material is made through Precision Machining with purity, and heat-conductive characteristic that it is good and thermal stability can satisfy the demand that this device is accurately measured sample fully.By inner ring 3-3 under inner ring 3-2, the furnace shell on furnace shell 3-1, the furnace shell by being press-fitted the inner multi-turn airflow line of the body of heater that forms, make the gas that enters sample area obtain sufficient preheating, reduced the influence of inflow gas greatly to sample temperature, guarantee the stable of sample test regional temperature, improved measuring accuracy.
Combustion chamber assembly 6 of the present utility model is to be made through special processes by different materials, wherein aluminium oxide combustion chamber 6-1 adopts purity to form by high temperature sintering after special process shapes up to 99% aluminium oxide again, and intensity and resistance to elevated temperatures can satisfy the demand of high temperature heating fully preferably for they.Adopt the technological process of inorganic binder 6-3 by special processing technology and science to make aluminium oxide combustion chamber 6-1, the nickel chromium triangle heater strip 6-2 formation heating unit that is assembled together effectively reliably, improved the efficiency of heating surface and thermal stability.
More than show and described ultimate principle of the present utility model and principal character and advantage thereof.The technology personage of the industry should understand; the utility model is not subjected to the restriction of above-mentioned implementing regulations; that describes in above-mentioned implementing regulations and the instructions just is used to illustrate principle of the present utility model; under the prerequisite that does not break away from the utility model principle and scope; the utility model also can have various changes and modifications, and these changes and improvements all belong in claimed the utility model scope.
The claimed scope of the utility model defines with appending claims and other equivalent.
Claims (7)
1. a DTA/DSC measures and heating arrangement, mainly emits (8), flange clamping ring (9), cooling flange (10), snorkel (11), pillar (12) to constitute by middle cover (1), inner cap (2), furnace shell assembly (3), sample stage assembly (4), combustion chamber assembly outer cover (5), combustion chamber assembly (6), combustion chamber assembly ring washer (7), assembly; Described sample stage assembly (4) is made up of by laser spot welding sample stage (4-1), brace (4-2), E type thermocouple wire (4-3), and this sample stage assembly (4) is arranged on combustion chamber assembly (6) and furnace shell assembly (3) central authorities; Described combustion chamber assembly outer cover (5) is nested with in combustion chamber assembly (6) and furnace shell assembly (3) outside; Described furnace shell assembly (3) is connected with cooling flange (10) by flange clamping ring (9) with combustion chamber assembly (6), and described cooling flange (10) is fixedlyed connected with pillar (12); It is characterized in that:
Described furnace shell assembly (3) is formed by connecting by being press-fitted by inner ring (3-3) under inner ring (3-2), the furnace shell on furnace shell (3-1), the furnace shell; Described furnace shell (3-1) is divided into furnace shell and following furnace shell by a thicker dividing plate with it, form the first lap gas channel between the sidewall of inner ring on the described furnace shell (3-2) and last furnace shell, the upper wall of dividing plate, form the second circle gas channel between the sidewall of inner ring under the described furnace shell (3-3) and following furnace shell, the lower wall of dividing plate, on described dividing plate, also dig a clear opening is arranged, the described first lap gas channel of this clear opening conducting and the second circle gas channel, thus the multi-turn gas channel formed on the furnace shell (3-1), furnace shell under inner ring (3-2), the furnace shell between the inner ring (3-3); Described snorkel (11) is communicated with the second circle gas channel;
Described combustion chamber assembly (6) is bondd by inorganic binder (6-3) by nickel chromium triangle heater strip (6-2) and is wrapped in aluminium oxide combustion chamber (6-1) and upward makes.
2. DTA/DSC according to claim 1 measures and heating arrangement, it is characterized in that: on described furnace shell (3-1), the furnace shell under inner ring (3-2), the furnace shell inner ring (3-3) be that 99.99% Ag material is made by purity.
3. DTA/DSC according to claim 1 measures and heating arrangement, it is characterized in that: described aluminium oxide combustion chamber (6-1) is that 99% alumina material is made by purity.
4. DTA/DSC according to claim 1 measures and heating arrangement, and it is characterized in that: described nickel chromium triangle heater strip (6-2) is made by the nickel-chrome material.
5. DTA/DSC according to claim 1 measures and heating arrangement, and it is characterized in that: described combustion chamber assembly outer cover (5) is made by the 1Cr18Ni9Ti material.
6. DTA/DSC according to claim 1 measures and heating arrangement, and it is characterized in that: described sample stage (4-1) is made by the constantan material.
7. DTA/DSC according to claim 1 measures and heating arrangement, and it is characterized in that: described assembly emits (8), flange clamping ring (9), cooling flange (10) to make by the Ni201 material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206527082U CN201965104U (en) | 2010-12-10 | 2010-12-10 | DTA/DSC measuring and heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206527082U CN201965104U (en) | 2010-12-10 | 2010-12-10 | DTA/DSC measuring and heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201965104U true CN201965104U (en) | 2011-09-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206527082U Expired - Fee Related CN201965104U (en) | 2010-12-10 | 2010-12-10 | DTA/DSC measuring and heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201965104U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697697A (en) * | 2013-12-31 | 2014-04-02 | 苏州市职业大学 | Sample heating device for low-frequency internal friction measurement |
| CN105424744A (en) * | 2015-12-22 | 2016-03-23 | 欧优科学仪器南京有限公司 | Single-tray-structured high-temperature differential scanning calorimeter |
-
2010
- 2010-12-10 CN CN2010206527082U patent/CN201965104U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697697A (en) * | 2013-12-31 | 2014-04-02 | 苏州市职业大学 | Sample heating device for low-frequency internal friction measurement |
| CN103697697B (en) * | 2013-12-31 | 2015-08-19 | 苏州市职业大学 | A kind of sample heating device measured for Low Frequency Internal Friction |
| CN105424744A (en) * | 2015-12-22 | 2016-03-23 | 欧优科学仪器南京有限公司 | Single-tray-structured high-temperature differential scanning calorimeter |
| CN105424744B (en) * | 2015-12-22 | 2018-06-15 | 欧优科学仪器南京有限公司 | The high temperature differential scanning calorimeter of simple disc structure |
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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: 20110907 Termination date: 20181210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |