CN109967152A - Fixed point device based on temperature control high-precision salt bath thermostat - Google Patents
Fixed point device based on temperature control high-precision salt bath thermostat Download PDFInfo
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- CN109967152A CN109967152A CN201910355057.6A CN201910355057A CN109967152A CN 109967152 A CN109967152 A CN 109967152A CN 201910355057 A CN201910355057 A CN 201910355057A CN 109967152 A CN109967152 A CN 109967152A
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- Prior art keywords
- fixed point
- fixed
- salt bath
- bath thermostat
- temperature control
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- 150000003839 salts Chemical class 0.000 title claims abstract description 49
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 208000002925 dental caries Diseases 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims abstract description 4
- 238000005192 partition Methods 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- 239000013078 crystal Substances 0.000 claims description 9
- 230000007797 corrosion Effects 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 6
- 230000008014 freezing Effects 0.000 description 5
- 238000007710 freezing Methods 0.000 description 5
- 238000012546 transfer Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 235000006708 antioxidants Nutrition 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L7/00—Heating or cooling apparatus; Heat insulating devices
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- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Control Of Temperature (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses a kind of fixed point devices based on temperature control high-precision salt bath thermostat, including salt bath thermostat, it is divided into two cavitys being connected longitudinally through partition in the salt bath thermostat, one of them is stir chamber, another is working chamber, agitating device is provided in stir chamber, the fixed device of fixed point is provided in working chamber, the fixed device upper end of fixed point is completely cut off by heat-barrier material and the inner wall of working chamber upper end, and the fixed device upper end-face edge of fixed point and the inner wall of working chamber upper end are tightly connected, the fixed device lower end of fixed point is installed on the inner wall of working chamber lower end by support rod, the fixed device positioned inside of fixed point has fixed point receptacle fixture, to ensure that fixed point case will not be destroyed because of vibration.The present invention combines fixed point with salt bath thermostat, provides better thermal field environment for the reproduction of fixed point, to reach high-caliber fixed point reproduction.
Description
Technical field
The present invention relates to a kind of measurement and calibration equipment, especially a kind of fixed point based on temperature control high-precision salt bath thermostat
Device.
Background technique
The development of the fixed point of one of the three elements defined as temperature scale through temperature scale entire development course, so far for
Only, it has been formed in warm area above freezing comprising a series of fixations including indium freezing point, tin freezing point, Zinc freezing point, the Freezing Point of Aluminium etc.
Point.Fixed point furnace is used for the heating of fixed point container, provides good thermal field for the reproduction process of these fixed points, therefore fixed
The quality of point furnace temperature field is horizontal by the reproduction for directly affecting fixed point.
The three-stage fixed point temperature control furnace that current fixed point furnace apparatus the most widely used in the world all uses, temperature control
Precision is 0.1 DEG C, and thermal field uniformity is mostly at 0.1 ~ 0.2 DEG C.The thermal field environment that can not be provided for the reproduction of fixed point, also without
Method realizes high-caliber fixed point reproduction.
Summary of the invention
It is a kind of based on temperature control high-precision salt bath constant temperature the purpose of the present invention is to overcome above-mentioned the deficiencies in the prior art, providing
Existing device is improved and is optimized by the fixed point device of slot, the device, it is made to meet the application of fixed point, device behaviour
Make simple, convenient disassembly, degree of safety height, can be applied convenient for user.
To achieve the above object, the present invention adopts the following technical solutions:
A kind of fixed point device based on temperature control high-precision salt bath thermostat, including salt bath thermostat, in the salt bath thermostat
It is divided into two cavitys being connected longitudinally through partition, one of them is stir chamber, another is working chamber, is set in stir chamber
It is equipped with agitating device.
The fixed device of fixed point is provided in working chamber, the upper end of the fixed device of the fixed point passes through heat-barrier material and work
Make the inner wall isolation of chamber upper end, and the fixed device upper end-face edge of fixed point and the inner wall of working chamber upper end are tightly connected, fixed point
Fixed device lower end is installed on the inner wall of working chamber lower end by support rod, and the fixed device positioned inside of fixed point has fixed point
Case.
The fixed device upper end-face edge of the fixed point is connect with the inner wall of working chamber upper end by laser welded seal.
The fixed device of the fixed point includes the vertical bar of three parallel longitudinal directions setting, is fixed on vertical bar multiple disposed in parallel
Support ring, vertical bar top is fixed with flange, in addition to the support ring of bottommost, the internal diameter of remaining support ring and the internal diameter phase of flange
Deng, the center of circle of support ring and flange on the same line, the internal diameter of the support ring of bottommost is less than remaining support ring internal diameter, uses
In the fixed point case that support is placed in support ring.
The fixed point case includes metal shell, and interior of shell is equipped with crystal vessel, places in crystal vessel high
Pure fixed point metallic object.
The fixed point case further includes the thermometer trap for being set to crystal vessel top, is placed in thermometer trap
Thermometer.
Thermal insulation board is provided between the thermometer trap and the fixed device outer wall of fixed point.
The metal shell uses, and there is extremely strong corrosion resistant high temperature alloy GH718 to be prepared.
The temperature-controlled precision of the salt bath thermostat is 0.01 DEG C, and vertical thermal field uniformity is 20mK.
The temperature upper limit of the high temperature thermal field of the salt bath thermostat is 700 DEG C.
The agitating device includes the motor being mounted on salt bath thermostat and is installed on stirring on its power output rod
Mix blade.Stirrer paddle is configured, the flowing of internal high temperature medium can be promoted, guarantee the uniformity of thermal field.
Salt bath thermostat is aided with mechanical stirring using the liquid salt melted as medium, and the high temperature thermal field uniformity of formation can be with
Thermostatic oil bath compares favourably, and its temperature upper limit can reach 700 DEG C.
The temperature-controlled precision of thermostat temperature source device (i.e. salt bath thermostat) of the invention is promoted to 0.01 DEG C, at 700 DEG C
The uniformity of thermal field can be promoted to 20mK, be already an important breakthrough compared to current fixed point stem body furnace apparatus.It will consolidate
Fixed point container is placed in the liquid tank that the thermal field uniformity is 20 mK, and the level of fixed point will have huge promotion.
Salt bath constant temperature slot device is sealed processing, since fixed point container is the core of entire fixed point device, guarantees
It is the most important thing that fixed point, which is not destroyed, therefore fixed point receptacle fixture is arranged inside vallecular cavity, it is ensured that fixed point holds
Device device will not be destroyed because of vibration.Fixed point case can be put into the heat transfer circulated therebetween by fixed device
Medium can guarantee fixed point device can thermally equivalent, and then provide uniform thermal field for the reproduction process of fixed point.
The characteristic solidified due to salt bath interior media high temperature melting, low temperature, it is desirable that the fixed point device being put into vallecular cavity must
High voltage load must can be carried, therefore the shell of fixed point case uses metal shell.
Since salt bath interior media is inorganic salts, the contaminated uniformity that may cause thermal field of medium is interfered, most easily
Pollution medium is the fixed point case metal shell being in direct contact with it, and metal occurs to aoxidize Fang Yinghou at high temperature
Oxide shedding, the uneven of thermal field in vallecular cavity can be directly resulted in, and then the reproduction for influencing fixed point is horizontal；Metal shell
Degree of oxidation is deepened, and the rupture that may cause fixed point is excessive, this will directly jeopardize the personal safety of Field Force.Therefore benefit is needed
Fixed point device is protected with the metal-back of corrosion-and high-temp-resistant.
Compared with prior art, the present invention has following technical effect that
The 1, present invention utilizes the excellent thermal field index of existing salt bath thermostat, and fixed point is combined with salt bath, is fixed point
Reproduction better thermal field environment is provided, to reach high-caliber fixed point reproduction.
2, ensure that solid by the present invention in that protected with high temperature resistant, anti-oxidant, corrosion resistant metal to fixed point container
The safety of fixed point, while also ensuring the safely and smoothly progress of fixed point reproduction process.
Fixed point receptacle fixture is arranged in the 3, present invention inside vallecular cavity, it is ensured that fixed point case will not be because of shake
It moves and is destroyed.
Detailed description of the invention
Fig. 1 is one embodiment of the invention structural schematic diagram；
Fig. 2 is fixed point receptacle fixture structural schematic diagram of the present invention；
In figure, 1. salt bath thermostats, 2. working chambers, 3. thermometer traps, 4. fixed point cases, 5. stir chambers, 6. agitating paddles
Leaf, the fixed device of 7. fixed points, 8. support rods, 9. vertical bars, 10. support rings, 11. flanges.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
This specification structure depicted in this specification institute accompanying drawings, ratio, size etc., only to cooperate specification revealed interior
Hold, so that those skilled in the art understands and reads, is not intended to limit the invention enforceable qualifications, therefore does not have skill
Essential meaning in art, the modification of any structure, the change of proportionate relationship or the adjustment of size can be produced not influencing the present invention
Under raw effect and the purpose that can reach, should all still it fall in the range of disclosed technology contents obtain and can cover.
Meanwhile cited such as "upper" in this specification, "lower", "left", "right", " centre " and " one " term, be merely convenient to
Narration is illustrated, rather than to limit the scope of the invention, relativeness is altered or modified, without substantive change
Under technology contents, when being also considered as the enforceable scope of the present invention.
As shown in Figure 1, the fixed point device based on temperature control high-precision salt bath thermostat, including salt bath thermostat 1, the salt
It is divided into two cavitys being connected longitudinally through partition in bath thermostat 1, one of them is stir chamber 5, another is work
Chamber 2 is provided with agitating device in stir chamber 5.
The fixed device 7 of fixed point is provided in working chamber 2, fixed 7 upper end of device of fixed point passes through heat-barrier material and work
The inner wall of 2 upper end of chamber completely cuts off, and fixed 7 upper end-face edge of device of fixed point and the inner wall of 2 upper end of working chamber are tightly connected, fixed point
Fixed 4 lower end of device is installed on the inner wall of 2 lower end of working chamber by support rod 8, and fixed 7 lower end of device of fixed point utilizes support
Bar 8 is welded to increase the bearing load ability of fixed device, and fixed 7 positioned inside of device of fixed point has fixed point container dress
Set 4.
As shown in Fig. 2, fixed 7 upper end-face edge of device of fixed point and the inner wall of working chamber upper end are connected by laser welded seal
It connects.
The fixed device 7 of fixed point includes the vertical bar 9 of three parallel longitudinal directions setting, is fixed on vertical bar 9 multiple disposed in parallel
Support ring 10 is fixed with flange 11 at the top of vertical bar 9, and flange 11 is connect with the inner wall of working chamber upper end by laser welded seal.
In addition to the support ring 10 of bottommost, the internal diameter of remaining support ring 10 and the internal diameter of flange 11 are equal, in support ring 10 and flange 11
The center of circle on the same line, the internal diameter of the support ring 10 of bottommost is less than remaining 10 internal diameter of support ring, is used to support and is placed in
Fixed point case 4 in support ring 10.
Fixed point case 4 includes metal shell, and interior of shell is equipped with crystal vessel, places in crystal vessel high-purity solid
Pinpoint metallic object.Due to the characteristic that there is the heat transfer medium inside salt bath high temperature melting, low temperature to solidify, this requires be put into vallecular cavity
Interior fixed point device can carry high voltage load, therefore fixed point shell uses metal shell.Since salt bath interior media is
Inorganic salts, the contaminated uniformity that may cause thermal field of medium are interfered, and medium most easy to pollute is to be in direct contact with it
Fixed point case metal shell, metal occur at high temperature aoxidize Fang Yinghou oxide shedding, slot can be directly resulted in
Intracavitary thermal field it is uneven, and then the reproduction for influencing fixed point is horizontal；The degree of oxidation of metal shell is deepened, and may cause fixation
The rupture of point is excessive, this will directly jeopardize the personal safety of Field Force.Therefore the metal-back pair of corrosion-and high-temp-resistant need to be utilized
Fixed point device is protected.Using the metal shell of corrosion-and high-temp-resistant, can the effectively intracavitary medium of withstanding grooves it is more during expansion
Fixed point shell bring stress, avoids fixed point device from being destroyed.Metal shell is high temperature resistant, anti-oxidant, corrosion resistant metal
It is made, it is contaminated also to can effectively avoid heat transfer medium in vallecular cavity.
Since fixed point container is the core of entire fixed point device, guaranteeing that fixed point is not destroyed is the most important thing, because
This arranges fixed point receptacle fixture inside vallecular cavity, it is ensured that fixed point case will not be destroyed because of vibration.Gu
Pinpoint fixed device can be put into fixed point case period, and the heat transfer medium circulated can guarantee that fixed point device can
Thermally equivalent, and then uniform thermal field is provided for the reproduction process of fixed point.
Fixed point case 4 further includes the thermometer trap 3 for being set to crystal vessel top, is placed with temperature in thermometer trap
Degree meter.It is provided with thermal insulation board between thermometer trap 3 and fixed 7 outer wall of device of fixed point, thermal insulation board carries out insulated heat, certain
Thermal diffusion is avoided in degree, and then guarantees uniform temperature field required for the reproduction of fixed point.
Metal shell uses, and there is extremely strong corrosion resistant high temperature alloy GH718 to be prepared.
The temperature-controlled precision of salt bath thermostat 1 is 0.01 DEG C, and vertical thermal field uniformity is 20mK.The high temperature of salt bath thermostat 1
The temperature upper limit of thermal field is 700 DEG C.
Agitating device includes the motor being mounted on salt bath thermostat 1 and the agitating paddle that is installed on its power output rod
Leaf 6 guarantees the uniformity of thermal field in vallecular cavity to guarantee that medium is continuously circulated in vallecular cavity.
The temperature-controlled precision of thermostat temperature source device (i.e. salt bath thermostat) of the invention is promoted to 0.01 DEG C, at 700 DEG C
The uniformity of thermal field can be promoted to 20mK, be already an important breakthrough compared to current fixed point stem body furnace apparatus.It will consolidate
Fixed point container is placed in the liquid tank that the thermal field uniformity is 20 mK, and the level of fixed point will have huge promotion.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (10)
1. a kind of fixed point device based on temperature control high-precision salt bath thermostat, characterized in that including salt bath thermostat, the salt
It is divided into two cavitys being connected longitudinally through partition in bath thermostat, one of them is stir chamber, another is working chamber,
It is provided with agitating device in stir chamber, the fixed device of fixed point is provided in working chamber.
2. the fixed point device as described in claim 1 based on temperature control high-precision salt bath thermostat, characterized in that the fixation
The fixed device upper end of point is completely cut off by heat-barrier material and the inner wall of working chamber upper end, and the fixed device upper end-face edge of fixed point and work
The inner wall for making chamber upper end is tightly connected, and the fixed device lower end of fixed point is installed on the inner wall of working chamber lower end by support rod,
The fixed device positioned inside of fixed point has fixed point case.
3. the fixed point device as described in claim 1 based on temperature control high-precision salt bath thermostat, characterized in that the fixation
The fixed device upper end-face edge of point is connect with the inner wall of working chamber upper end by laser welded seal.
4. the fixed point device as described in claim 1 based on temperature control high-precision salt bath thermostat, characterized in that the fixation
The fixed device of point includes the vertical bar of three parallel longitudinal directions setting, and multiple support rings disposed in parallel, vertical bar top are fixed on vertical bar
It is fixed with flange, in addition to the support ring of bottommost, the internal diameter of remaining support ring and the internal diameter of flange are equal, in support ring and flange
The center of circle on the same line, the internal diameter of the support ring of bottommost is less than remaining support ring internal diameter, is used to support and is placed in support
Fixed point case in ring.
5. the fixed point device as described in claim 1 based on temperature control high-precision salt bath thermostat, characterized in that the fixation
Point case includes metal shell, and interior of shell is equipped with crystal vessel, places high-purity fixed point metallic object in crystal vessel.
6. the fixed point device as claimed in claim 5 based on temperature control high-precision salt bath thermostat, characterized in that the fixation
Point case further includes the thermometer trap for being set to crystal vessel top, and thermometer can be placed in thermometer trap.
7. the fixed point device as claimed in claim 6 based on temperature control high-precision salt bath thermostat, characterized in that the temperature
Thermal insulation board is provided between meter trap and the fixed device outer wall of fixed point.
8. the fixed point device as claimed in claim 5 based on temperature control high-precision salt bath thermostat, characterized in that the metal
Shell uses, and there is extremely strong corrosion resistant high temperature alloy GH718 to be prepared.
9. the fixed point device as described in claim 1 based on temperature control high-precision salt bath thermostat, characterized in that the salt bath
The temperature-controlled precision of thermostat is 0.01 DEG C, and vertical thermal field uniformity is 20mK；The temperature of the high temperature thermal field of the salt bath thermostat
The upper limit is 700 DEG C.
10. the fixed point device as described in claim 1 based on temperature control high-precision salt bath thermostat, characterized in that described to stir
Mix the stirrer paddle that device includes the motor being mounted on salt bath thermostat and is installed on its power output rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910355057.6A CN109967152B (en) | 2019-04-29 | 2019-04-29 | Fixed point device based on accuse temperature high accuracy salt bath constant temperature groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910355057.6A CN109967152B (en) | 2019-04-29 | 2019-04-29 | Fixed point device based on accuse temperature high accuracy salt bath constant temperature groove |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109967152A true CN109967152A (en) | 2019-07-05 |
| CN109967152B CN109967152B (en) | 2024-04-30 |
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ID=67087036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910355057.6A Active CN109967152B (en) | 2019-04-29 | 2019-04-29 | Fixed point device based on accuse temperature high accuracy salt bath constant temperature groove |
Country Status (1)
| Country | Link |
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| CN (1) | CN109967152B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3238535A1 (en) * | 1982-10-18 | 1984-04-19 | Planer Products Ltd., Sunbury-on-Thames, Middlesex | Process and apparatus for controlled cooling of a product |
| CN102279065B (en) * | 2011-03-03 | 2012-12-05 | 中国计量科学研究院 | Automatic recurring device for gallium fixed points |
| CN104251750A (en) * | 2014-09-04 | 2014-12-31 | 北京三原兆兴科技有限公司 | Water triple-point bottle automatic freezing and storage device and method |
| CN105092096B (en) * | 2015-05-05 | 2018-03-27 | 山东省计量科学研究院 | The method and apparatus of temperature correction is carried out using benzoic acid condensation point temperature level ground |
| CN209968446U (en) * | 2019-04-29 | 2020-01-21 | 济南长峰致远仪表科技有限公司 | Fixed point device based on temperature control high-precision salt bath thermostatic bath |
-
2019
- 2019-04-29 CN CN201910355057.6A patent/CN109967152B/en active Active
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| CN109967152B (en) | 2024-04-30 |
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