CN205102955U - High vacuum insulation calorimeter - Google Patents
High vacuum insulation calorimeter Download PDFInfo
- Publication number
- CN205102955U CN205102955U CN201520901253.6U CN201520901253U CN205102955U CN 205102955 U CN205102955 U CN 205102955U CN 201520901253 U CN201520901253 U CN 201520901253U CN 205102955 U CN205102955 U CN 205102955U
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- CN
- China
- Prior art keywords
- inner core
- calorimeter
- vacuum
- upper cover
- urceolus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000009413 insulation Methods 0.000 title claims abstract description 16
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 21
- 239000001301 oxygen Substances 0.000 claims abstract description 21
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 11
- 239000010935 stainless steel Substances 0.000 claims abstract description 11
- 239000000523 sample Substances 0.000 claims description 12
- 239000010410 layer Substances 0.000 claims description 10
- 238000006213 oxygenation reaction Methods 0.000 claims description 10
- 238000010276 construction Methods 0.000 claims description 9
- 239000011229 interlayer Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 description 11
- 238000007707 calorimetry Methods 0.000 description 8
- 230000003111 delayed effect Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 239000005711 Benzoic acid Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The utility model provides a high vacuum insulation calorimeter relates to an oxygen bomb calorimeter technical field. The utility model discloses an including urceolus, inner tube and oxygen bomb, wherein, the inner tube is the stainless steel vacuum cup, and the stainless steel vacuum cup is vacuum sandwich structure, and the inner tube top is provided with the upper cover, is provided with seal structure between upper cover and the inner tube. The utility model discloses a heat exchange between isolated inner tube in vacuum layer and the external environment really realizes the adiabatci condition, the precision of assurance test data.
Description
Technical field
The utility model relates to a kind of oxygen bomb calorimeter technical field, particularly relates to a kind of vacuum insulation calorimeter.
Background technology
Oxygen bomb calorimeter is the gauging instrument for measuring solid, liquid fuel calorific value.Ultimate principle is: a certain amount of heating power standard substance benzoic acid is in calorimetric oxygen bomb combustion, and liberated heat makes whole Calorimetry system (comprising the water in inner core, inner core or other medium, oxygen bomb, stirrer, thermometer etc.) by initial state temperature T
abe raised to final states temperature T
b, then by a certain amount of measured matter again condition same as described above carry out burning measure.Because the calorimeter used is identical, and calorimetric system temperature changes another causing, and thus can obtain the calorific value of measured matter.
Oxygen bomb calorimeter can be divided into isothermal oxygen bomb calorimeter (being called for short Isothermal Hot gauge) and heat insulation-type oxygen bomb calorimeter (abbreviation adiabatic calorimeter) from calorimetric principle.The double-jacket (abbreviation urceolus) that calorimetric system is filled water (or other medium) surrounded, when sample makes calorimetric system temperature rise in calorimetric oxygen bomb combustion, if urceolus temperature remains unchanged, the type calorimeter is called Isothermal Hot gauge, if urceolus temperature automatic synchronous tracking inner core temperature (not producing heat trnasfer between inner/outer tube), be then called adiabatic calorimeter.
Current domestic oxygen bomb calorimeter manufacturer produces Isothermal Hot gauge.And Isothermal Hot gauge is in process of the test, heat trnasfer can be produced between inner/outer tube, although take corresponding compensation rate in heat Calculation process, be difficult to calculate accurately, therefore isotherm formula calorimeter precision, accuracy are difficult to the demand meeting the work such as similar arbitration, scientific research.
Manufacturer production adiabatic calorimeter a small amount of abroad, the urceolus temperature taked follows the tracks of inner core temperature techniques, due to the delayed of temperature tracking technique and overshoot, is difficult to realize heat zero exchange between inner/outer tube.
Utility model content
For the weak point existed in the problems referred to above, the utility model provides a kind of vacuum insulation calorimeter, makes it completely cut off the heat interchange between inner core and external environment by vacuum layer, really realizes adiabatic condition, the precision of warranty test data.
In order to solve the problem, the utility model provides a kind of vacuum insulation calorimeter, comprise urceolus, inner core and oxygen bomb, wherein, described inner core is stainless-steel vacuum cup, described stainless-steel vacuum cup is vacuum interlayer structure, is provided with upper cover above described inner core, is provided with hermetically-sealed construction between described upper cover and described inner core.
Preferably, between described urceolus and described inner core, be provided with vacuum layer, described urceolus is provided with heat-insulation layer, between described urceolus and described upper cover, be provided with hermetically-sealed construction.
Preferably, described upper cover adopts heat-barrier material or vacuum interlayer to make.
Preferably, the bottom of described upper cover is provided with temp probe, stirrer and oxygenation head, described upper cover is connected with described oxygen bomb by described oxygenation head, described temp probe and described stirrer are respectively arranged with the both sides of described oxygenation head, and it is inner that described temp probe and described stirrer are all positioned at described inner core.
Preferably, described hermetically-sealed construction is O-ring seal or rubber ring.
Preferably, the inside surface of described inner core is mirror surface structure.
Compared with prior art, the utility model has the following advantages:
1, vacuum screened Calorimetry system and extraneous heat interchange, really realize adiabatic method and measure heat, improve the precision of instrument;
2, structure is simple, follows the tracks of inner core mode realize adiabatic model without the need to adopting urceolus, avoids the delayed or overshoot of urceolus temperature temperature variation when following the tracks of inner core temperature.
Accompanying drawing explanation
Fig. 1 is example structure schematic diagram of the present utility model;
Temperature changing curve diagram when Fig. 2 is temperature tracking technique inner/outer tube of the present utility model test.
Main element symbol description:
1-urceolus 2-inner core 3-upper cover
4-oxygen bomb 5-oxygenation head 6-temp probe
7-stirrer
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing and example, the utility model is described in further detail, but example is not as to restriction of the present utility model.
As depicted in figs. 1 and 2, embodiment of the present utility model comprises urceolus 1, inner core 2 and oxygen bomb 4, wherein, inner core 2 is stainless-steel vacuum cup, stainless-steel vacuum cup is vacuum interlayer structure, is provided with upper cover 3 above inner core 2, is provided with hermetically-sealed construction between upper cover 3 and inner core 2.Be provided with vacuum layer between urceolus 1 and inner core 2, urceolus 1 is provided with heat-insulation layer, between urceolus 1 and upper cover 3, be provided with hermetically-sealed construction.Upper cover 3 adopts heat-barrier material or vacuum interlayer to make.The bottom of upper cover 3 is provided with temp probe 6, stirrer 7 and oxygenation 5, and upper cover 3 is connected with oxygen bomb 4 by oxygenation 5, and temp probe 6 and stirrer 7 are respectively arranged with the both sides of oxygenation 5, and it is inner that temp probe 6 and stirrer 7 are all positioned at inner core 2.Hermetically-sealed construction is O-ring seal or rubber ring.The inside surface of inner core 2 is mirror surface structure.
Now external manufacturer production adiabatic calorimeter, the urceolus temperature taked follows the tracks of inner core temperature techniques, due to the delayed of temperature tracking technique and overshoot, is difficult to realize heat zero exchange between inner/outer tube: temperature tracking technique, adopts urceolus temperature to follow the tracks of inner core temperature.I.e. system acquisition inner core temperature, adopts refrigeration or heat regulation urceolus temperature variation by inner core temperature variations.The test initial stage, latter stage due to inner core temperature variation very little, the change ratio that urceolus temperature follows the tracks of inner core temperature is easier to realize, and the inner/outer tube temperature difference can not produce obvious overshoot or delayed.When the main phase starts, combustible burning in oxygen bomb, inner core temperature variation is violent, the speed of inner core temperature variation, the trend of inner core temperature variation are unpredictable, system acquisition inner core temperature, start heating arrangement and regulate urceolus temperature, be difficult to the instantaneous power of control heater, therefore urceolus temperature is in main phase overshoot or temperature tracking lag.
Temperature tracking technique, because urceolus temperature is difficult to realize synchronized tracking inner core temperature, cause still creating a small amount of heat interchange between inner/outer tube, and heat interchange causes its heat exchange amount different due to the situation difference tested at every turn, is therefore difficult to the precision, the accuracy that improve experimental result.
Adopt stainless-steel vacuum cup as inner core 2 in the present embodiment, inner core 2 does not destroy vacuum environment as far as possible, the not open mouth of a river bottom inner core 2, and inner core 2 upper cover 3 adopts heat-barrier material or vacuum interlayer to make, upper cover 3 and inner core 2 mouthfuls adopt O-ring seal or seal with elastometic washer, ensure that heat does not run off in inner core 2.Measured matter is when oxygen bomb 4 combustion, and its heat passes to Calorimetry system (inner core, water, oxygen bomb etc.) by stirrer 7, and whole Calorimetry system absorbs the heat of whole combustible substance, until Calorimetry system temperature reaches balance.Now temp probe 6 detects the temperature variations before and after Calorimetry system heat absorption, is directly calculated the thermal value of calorimetric thermal capacity or measured matter by this situation of change.
, because the heat in inner core 2 is all absorbed by Calorimetry system, there is not heat interchange with the external world in now vacuum insulation calorimeter, does not need to consider process of the test inner/outer tube heat interchange situation.Thermal capacity formula can be simply:
Wherein, E is thermal capacity, Q
heatfor inner core absorbs heat, Δ T is the temperature rise of inner core main phase.Otherwise thermal value formula.
Consider stainless-steel vacuum cup, in welding part, there is the heat interchange between vacuum cup inwall a small amount of slowly and outer wall, and laboratory ambient temperature, air-flows etc. are on the impact of instrument entirety, can add one layer of heat preservation layer in vacuum cup outside or have the urceolus of water, stablizing of warranty test environment, improves the interference performance of calorimeter environment resistant.
In calorimeter, the mode of thermal release is mainly by heat transfer, convection type, and the heat of radiation delivery is little.Vacuum has good iris action to heat transfer, convection current two kinds of thermaltransmission modes, and barriering efficiency is almost 100%.And stainless minute surface can be intercepted radiations heat energy in Calorimetry system by mirror-reflection.The present embodiment adopts stainless-steel vacuum cup to replace inner core, completely cuts off the heat interchange between inner core and external environment, really realizes adiabatic condition, the precision of warranty test data by vacuum layer.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (6)
1. a vacuum insulation calorimeter, comprises urceolus, inner core and oxygen bomb, it is characterized in that, described inner core is stainless-steel vacuum cup, described stainless-steel vacuum cup is vacuum interlayer structure, is provided with upper cover above described inner core, is provided with hermetically-sealed construction between described upper cover and described inner core.
2. vacuum insulation calorimeter as claimed in claim 1, is characterized in that, be provided with vacuum layer between described urceolus and described inner core, described urceolus is provided with heat-insulation layer, be provided with hermetically-sealed construction between described urceolus and described upper cover.
3. vacuum insulation calorimeter as claimed in claim 2, is characterized in that, described upper cover adopts heat-barrier material or vacuum interlayer to make.
4. vacuum insulation calorimeter as claimed in claim 3, it is characterized in that, the bottom of described upper cover is provided with temp probe, stirrer and oxygenation head, described upper cover is connected with described oxygen bomb by described oxygenation head, described temp probe and described stirrer are respectively arranged with the both sides of described oxygenation head, and it is inner that described temp probe and described stirrer are all positioned at described inner core.
5. vacuum insulation calorimeter as claimed in claim 4, it is characterized in that, described hermetically-sealed construction is O-ring seal or rubber ring.
6. vacuum insulation calorimeter as claimed in claim 5, it is characterized in that, the inside surface of described inner core is mirror surface structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520901253.6U CN205102955U (en) | 2015-11-12 | 2015-11-12 | High vacuum insulation calorimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520901253.6U CN205102955U (en) | 2015-11-12 | 2015-11-12 | High vacuum insulation calorimeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205102955U true CN205102955U (en) | 2016-03-23 |
Family
ID=55518732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520901253.6U Expired - Fee Related CN205102955U (en) | 2015-11-12 | 2015-11-12 | High vacuum insulation calorimeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205102955U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840466A (en) * | 2017-04-07 | 2017-06-13 | 北京迪奈创新科技有限公司 | The water route connection system of vacuum colorimeter |
| CN112394084A (en) * | 2020-09-14 | 2021-02-23 | 万向一二三股份公司 | Device and method for measuring combustion heat value of lithium ion battery in limited space |
-
2015
- 2015-11-12 CN CN201520901253.6U patent/CN205102955U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840466A (en) * | 2017-04-07 | 2017-06-13 | 北京迪奈创新科技有限公司 | The water route connection system of vacuum colorimeter |
| CN106840466B (en) * | 2017-04-07 | 2023-10-31 | 北京迪奈创新科技有限公司 | Waterway connection system of vacuum calorimeter |
| CN112394084A (en) * | 2020-09-14 | 2021-02-23 | 万向一二三股份公司 | Device and method for measuring combustion heat value of lithium ion battery in limited space |
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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: 20160323 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |