CN204008523U - A kind of packoff for differential thermal analyzer - Google Patents
A kind of packoff for differential thermal analyzer Download PDFInfo
- Publication number
- CN204008523U CN204008523U CN201420443724.9U CN201420443724U CN204008523U CN 204008523 U CN204008523 U CN 204008523U CN 201420443724 U CN201420443724 U CN 201420443724U CN 204008523 U CN204008523 U CN 204008523U
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- CN
- China
- Prior art keywords
- differential thermal
- thermal analyzer
- end cover
- web member
- gas piping
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Abstract
The disclosed packoff for differential thermal analyzer of the utility model, comprise differential thermal analyzer heating system, differential thermal analyzer dispersion system and the web member with axially extending bore, differential thermal analyzer heating system has gas piping one, differential thermal analyzer dispersion system has gas piping two, the fixing upper end cover in one end of web member, the other end of web member is bottom end cover fixedly, in upper end cover, be provided with O-ring seals one, in bottom end cover, be provided with O-ring seals two, the gas piping one of differential thermal analyzer heating system passes through upper end cover, be connected with the threaded one end of web member axially extending bore, the gas piping two of differential thermal analyzer dispersion system passes through bottom end cover, be threaded with the other end of web member axially extending bore.Like this, by two O-ring seals, can realize the sealing completely of differential thermal analyzer test gas channels, the utility model is simple in structure, and it is convenient to implement.
Description
Technical field
The utility model relates to the packoff that a kind of instrument connects use, is a kind of packoff for differential thermal analyzer specifically.
Background technology
Differential thermal analysis (DTA) (DTA) measuring technology is a kind of thermometric analysis method, is widely used in the research in the fields such as inorganic material, organic material, bioabsorbable polymer material, superpolymer and complex compound.Its principle is, by measuring the relation of temperature difference and temperature between sample and reference substance, amalyzing substances be heated or cooling procedure in the various physical and chemical changes that occur, and then disclose the relation between its structure and performance.Differential thermal analysis (DTA) mainly realizes by differential thermal analyzer.Differential thermal analyzer main part is comprised of gas make-up unit, balanced system, distribution system, thermal resistance sheet, protection tube, heating unit and furnace temperature thermopair etc.
Along with the continuous progress of differential thermal analysis (DTA) technology and the continuous expansion of range of application, research is found at some, atmosphere to be required, in higher test, even if pass into protective atmosphere, still not reach required effect.In the test process at aluminium nitride composite ceramic material, because aluminium nitride is easily oxidized in air atmosphere, even by inert gases such as nitrogen, the exothermic peak that oxidized aluminum nitride generates aluminium oxide still can be detected 800 ℃ of left and right.Tracing it to its cause, is mainly that the design due to agent structure in more existing differential thermal analyzers has been not hermetic.Structure from differential thermal analyzer; blanket gas seals from entering into dispersion system section; and also seal from heating system section to discharging; but between the gas piping of the gas piping of dispersion system section and heating system section, be direct-connected by web member screw thread, not additional tight seal approach.Therefore, air extraneous in test process may be seeped into gas piping by screw thread, impact test effect.
The defect that can not realize accurate protective atmosphere test in order to solve existing differential thermal analyzer, people mainly realize by following two kinds of methods.The first is the intake that increases blanket gas, with high blanket gas air pressure, reduces the probability that outside air enters gas piping, thereby realizes protective atmosphere test.But the method only can reduce the impact of outside air, can not reach the sealing of gas piping completely, excessive gas also can cause very large waste simultaneously.And another method is to add the band of a similar poly-tetrem alkene unsintered tape at web member screw thread place, reach the object of sealing.But due in test process, high temperature easily makes band aging and lost efficacy, and therefore, solves at present differential thermal analyzer sealing problem and all has defect.
Summary of the invention
The purpose of this utility model is the seal defect for dispersion system section gas piping in current differential thermal analyzer and heating system section gas piping, and a kind of packoff for differential thermal analyzer is proposed, realize in differential thermal analyzer and being tightly connected between dispersion system section gas piping and heating system section gas piping.
Packoff for differential thermal analyzer of the present utility model comprises: differential thermal analyzer heating system, differential thermal analyzer dispersion system and the web member with axially extending bore, differential thermal analyzer heating system has gas piping one, differential thermal analyzer dispersion system has gas piping two, the fixing upper end cover in one end of web member, the other end of web member is bottom end cover fixedly, in upper end cover, be provided with O-ring seals one, in bottom end cover, be provided with O-ring seals two, the gas piping one of differential thermal analyzer heating system passes through upper end cover, be connected with the threaded one end of web member axially extending bore, the gas piping two of differential thermal analyzer dispersion system passes through bottom end cover, be threaded with the other end of web member axially extending bore.
Packoff for differential thermal analyzer of the present utility model, by two O-ring seals, can realize the sealing completely of differential thermal analyzer test gas channels, and the utility model is simple in structure, and it is convenient to implement.
Accompanying drawing explanation
Fig. 1 is the schematic diagram for the packoff of differential thermal analyzer.
Embodiment
Referring to Fig. 1, packoff for differential thermal analyzer of the present utility model comprises: differential thermal analyzer heating system 8, differential thermal analyzer dispersion system 6 and the web member 5 with axially extending bore, differential thermal analyzer heating system 8 has gas piping 1, differential thermal analyzer dispersion system 6 has gas piping 27, the fixing upper end cover 1 in one end of web member 5, the other end of web member 5 is bottom end cover 3 fixedly, in upper end cover 1, be provided with O-ring seals 1, in bottom end cover 3, be provided with O-ring seals 24, the gas piping 1 of differential thermal analyzer heating system 8 passes through upper end cover 1, be connected with the threaded one end of web member 5 axially extending bores, the gas piping 27 of differential thermal analyzer dispersion system 6 passes through bottom end cover 3, be threaded with the other end of web member 5 axially extending bores.Like this, utilize two O-ring seals, can realize the sealing completely of differential thermal analyzer test gas channels.
Claims (1)
1. the packoff for differential thermal analyzer, comprise differential thermal analyzer heating system (8), differential thermal analyzer dispersion system (6) and there is the web member (5) of axially extending bore, differential thermal analyzer heating system (8) has gas piping one (9), differential thermal analyzer dispersion system (6) has gas piping two (7), it is characterized in that in one end of web member (5) fixedly upper end cover (1), the other end of web member (5) is bottom end cover (3) fixedly, in upper end cover (1), be provided with O-ring seals one (2), in bottom end cover (3), be provided with O-ring seals two (4), the gas piping one (9) of differential thermal analyzer heating system (8) passes through upper end cover (1), be connected with the threaded one end of web member (5) axially extending bore, the gas piping two (7) of differential thermal analyzer dispersion system (6) passes through bottom end cover (3), be threaded with the other end of web member (5) axially extending bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420443724.9U CN204008523U (en) | 2014-08-07 | 2014-08-07 | A kind of packoff for differential thermal analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420443724.9U CN204008523U (en) | 2014-08-07 | 2014-08-07 | A kind of packoff for differential thermal analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204008523U true CN204008523U (en) | 2014-12-10 |
Family
ID=52048503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420443724.9U Expired - Fee Related CN204008523U (en) | 2014-08-07 | 2014-08-07 | A kind of packoff for differential thermal analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204008523U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113484358A (en) * | 2021-05-27 | 2021-10-08 | 深圳技术大学 | Two-way air inlet thermal analyzer for transition metal powder reaction |
-
2014
- 2014-08-07 CN CN201420443724.9U patent/CN204008523U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113484358A (en) * | 2021-05-27 | 2021-10-08 | 深圳技术大学 | Two-way air inlet thermal analyzer for transition metal powder reaction |
| CN113484358B (en) * | 2021-05-27 | 2024-01-05 | 深圳技术大学 | Two-way inlet gas thermal analyzer for transition metal powder reaction |
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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: 20141210 Termination date: 20150807 |
|
| EXPY | Termination of patent right or utility model |