CN209706983U - Magnetic suspension heat of fusion measuring instrument - Google Patents
Magnetic suspension heat of fusion measuring instrument Download PDFInfo
- Publication number
- CN209706983U CN209706983U CN201920421901.6U CN201920421901U CN209706983U CN 209706983 U CN209706983 U CN 209706983U CN 201920421901 U CN201920421901 U CN 201920421901U CN 209706983 U CN209706983 U CN 209706983U
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- Prior art keywords
- magnetic suspension
- heat
- measuring instrument
- lid
- ice cube
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Abstract
The utility model relates to a kind of heat of fusion experimental facilities, in particular to magnetic suspension heat of fusion measuring instrument, including inner cylinder, outer cylinder and lid, the lid includes upper cover and lower cover, closed inner cavity chamber is formed between the lower cover and inner cylinder, closed exocoel is formed between the outer cylinder and upper cover, material to be measured is equipped in the inner cavity chamber, thermal resistance material is equipped in the exocoel, the material to be measured includes annular ice cube and cold water, and magnet is equipped in annular ice cube, the lid is equipped with temperature demonstrator, the temperature demonstrator runs through lid, and the sensing probe of temperature demonstrator protrudes into inner cavity chamber, equilibrium temperature is all zero degree, so that ice (circular ring shape ice cube) aqueous mixtures in inner cylinder are that isolated blob is exchanged with extraneous empty calory, solve interference of the external environment to measurement, scattering and disappearing for heat is reduced to the greatest extent, make It obtains the heat that U-shaped heating tube generates all to be absorbed by ice cube, greatly improves the accuracy of measurement result.
Description
Technical field
The utility model relates to a kind of heat of fusion experimental facilities, in particular to magnetic suspension heat of fusion measuring instrument.
Background technique
Using heat balance principle measurement ice heat of fusion apparatus, at present using it is most common be calorimeter.Calorimetric
Device is made of heat-preservation cylinder, inner cylinder, thermometer, blender etc..It is measured using heat balance principle.Use calorimeter and this survey
Determine method, there are a variety of shortcomings: key is that the method for producing 0 DEG C of ice pellets not only takes time and effort, and effect is also difficult to guarantee.
And ice pellets is during weighing is dried in taking-up, and continuation is melting, and brings greater inconvenience and measurement error.Since ice is complete
It is too long the time required to melting, it externally radiates more, the heat absorption such as heat-preservation cylinder and inner cylinder is larger, increases heat loss.Water and ice are led
Hot poor, though agitated, Temperature Distribution still not bery uniformly, causes temperature measurement inaccurate.The above-mentioned above reason causes student real
It is often excessive to test error, it is difficult to meet teaching and teaching and research needs.
And existing modified ice melts measuring instrument and still has an impact in experimental situation the deficiency of precision, as heating method,
The problem of measuring use, the temperature isolation etc. of object, influences vulnerable to experimental situation, expands systematic error.This formal structure
With excessively complicated in production, daily maintenance inconvenience, high failure rate.
Utility model content
Aiming at the shortcomings of the prior art, the utility model provides magnetic suspension heat of fusion measuring instrument.
To achieve the goals above, technical solution adopted in the utility model is: magnetic suspension heat of fusion measuring instrument, packet
Inner cylinder, outer cylinder and lid are included, the lid includes upper cover and lower cover, closed inner cavity chamber is formed between the lower cover and inner cylinder,
Closed exocoel is formed between the outer cylinder and upper cover；
Preferably, it is equipped with material to be measured in the inner cavity chamber, is equipped with thermal resistance material in the exocoel, the material to be measured includes ring
Shape ice cube and cold water, and magnet is equipped in annular ice cube；
Preferably, the lid is equipped with temperature demonstrator, and the temperature demonstrator runs through lid, and temperature demonstrator
Sensing probe protrudes into inner cavity chamber；
Preferably, the lower end surface of the lower cover is equipped with heating tube, and the outer cylinder bottom is equipped with magnetic suspension gravity sensor.
Preferably, the heating tube is U-shaped structure, and heating tube is installed by connection frame and fixed.
Preferably, the connection frame is disc-shaped structure by heating tube one end.
Preferably, between the upper cover and lower cover be spaced setting, and between be equipped with connecting rod.
Preferably, it is connected through a screw thread between the inner cylinder and lower cover, between outer cylinder and outer cover.
Preferably, the cavity for circuit connection, the cavity are formed between the connection frame, lower cover, wire barrel and upper cover
Wiring port is additionally provided at upper cover.
Preferably, the thermal resistance material at least submerges inner cylinder, and the inner barrel and outer barrel is made of heat insulator.
Preferably, the heating tube is along annular ice cube axis direction arrangement.
Preferably, the thermal resistance material is mixture of ice and water.
Preferably, the outer cylinder bottom is equipped with support base, is equipped with elevating mechanism, the magnetic suspension gravity in the support base
Sensor is vertically moved by elevating mechanism and is adjusted.
The utility model has the beneficial effects that placing mixture of ice and water between 1, inner cylinder and outer cylinder, equilibrium temperature is all zero degree,
So that ice (circular ring shape ice cube) aqueous mixtures in inner cylinder are that isolated blob is exchanged with extraneous empty calory, solves external environment pair
The interference of measurement；In addition, interior bucket is insulator, during heating sheet heats ice cube, heat is reduced to the greatest extent
Scatter and disappear so that U-shaped heating tube generate heat all absorbed by ice cube, greatly improve the accuracy of measurement result.
2, it is passed so that ice cube is suspended in always in inner cylinder water by gravity by adjusting magnetic suspension gravity sensor position
The variation of sensor registration learns whether system balances, and explains are as follows: when gravity sensor registration is constant, illustrates that ice water is mixed in system
Conjunction object is zero degree, and system reaches equilibrium state.So the variation by gravity sensor registration can determine whether system reaches
Stable state, and then determine that test preceding ice cube is zero degree really, is reduced to minimum for error.
3, provide system initial state when be stable state a kind of method: before heating, when gravity sensor registration is constant,
It is zero to be mutually authenticated with the thermometer registration being inserted in inner cylinder, determines that mixture of ice and water is zero degree.
4, it when the mixture of ice and water in interior bucket is isolated blob, is measured using magnetic suspension gravity sensor and melts ice cube
Quality, the method had not only melted the quality of ice cube in available experiment, but also without taking out ice cube, thus the whole process external world be
Empty calory of uniting exchanges, and substantially increases the accuracy of measurement.
5, a kind of heat of fusion that ice is solved by curve-fitting method is proposed.
Detailed description of the invention
Fig. 1 is the combining structure schematic diagram of the utility model；
Fig. 2 is the decomposition texture schematic diagram of the utility model.
Specific embodiment
As Figure 1-Figure 2, magnetic suspension heat of fusion measuring instrument, including inner cylinder 1, outer cylinder 2 and lid 3, the lid 3
Including upper cover 4 and lower cover 5, closed inner cavity chamber, shape between the outer cylinder 2 and upper cover 4 are formed between the lower cover 5 and inner cylinder 1
At closed exocoel.Upper cover 4 and lower cover 5 close off outer cylinder 2 and inner cylinder 1, and size corresponds to two-by-two.Upper cover 4 and lower cover 5 can be
Split type or integral structure is not done excessively repeated herein depending on actual production.
It is equipped with material to be measured in the inner cavity chamber, thermal resistance material is equipped in the exocoel, the material to be measured includes annular ice cube
With cold water, and magnet is equipped in annular ice cube.Wherein annular ice cube is actual determinand, measures its heat of fusion.The setting of thermal resistance material
It is used to completely cut off the circulation of heat in exocoel, error is avoided to influence experimental data precision.Magnet and magnetic suspension gravity sensitive
Device interaction, by adjusting magnetic suspension gravity sensor with respect to upper and lower position, so that annular ice cube suspension surface always.
The lid 3 is equipped with temperature demonstrator 6, and the temperature demonstrator 6 runs through lid 3, and the biography of temperature demonstrator 6
Sense probe protrudes into inner cavity chamber.Initially changed with process temperature by 6 measurement experiment of temperature demonstrator, is produced for mature technology
Product do not do excessive elaboration and limitation herein.
The lower end surface of the lower cover 5 is equipped with heating tube 7, and 2 bottom of outer cylinder is equipped with magnetic suspension gravity sensor.One
Heating sheet is used in a little existing experimental facilities, heated perimeter is limited, and heating efficiency is relatively low and uneven.Heating tube 7
Design so that heating process becomes stereoscopic radiation type, heating efficiency is high, homogeneous heating.Magnetic suspension gravity sensor is to utilize magnetic
Suspension technology measures the sensor of gravity or load change, for existing technological means does not do excessive elaboration herein.
The heating tube 7 is U-shaped structure, and heating tube 7 is fixed by the installation of connection frame 8.U-shaped structure is common one
Kind improves heating efficiency shape, is conducive to heater circuit design and three-dimensional heat radiation is presented.By the design of connection frame 8,
Facilitate heat-insulated material that can submerge or wrap up inner cylinder 1.
The connection frame 8 is disc-shaped structure by 7 one end of heating tube, which forms good heat-insulated plane.
It is spaced setting between the upper cover 4 and lower cover 5, and is equipped with connecting rod 9 between upper cover 4 and lower cover 5.Connecting rod 9 rises
To the effect for connecting and separating upper cover 4, lower cover 5.
It is connected through a screw thread between the inner cylinder 1 and lower cover 5, between outer cylinder 2 and outer cover, facilitates installation and sealing.Spiral shell
Line connection is again similar to " labyrinth seal " structure, even if medium reaches throttling or sealing by tortuous and narrow channel
Effect.
The cavity for circuit connection is formed between the connection frame 8, lower cover 5, wire barrel 10 and upper cover 4, the cavity exists
Wiring port is additionally provided at upper cover 4.Facilitate wiring to draw, can directly at Wiring port plug connection power supply.
The thermal resistance material at least submerges inner cylinder 1, and the inner cylinder 1 and outer cylinder 2 are made of heat insulator.Form cladding
Heat-insulated environment reduces thermal loss loss or external heat is avoided to enter interference.Heat insulator be also known as thermal insulation material or
Heat-barrier material does not do excessive elaboration herein.
The heating tube 7 is arranged along annular ice cube axis direction, i.e., in annular ice cube centre, reduces experimental system and miss
Difference.
The thermal resistance material is mixture of ice and water, and basic composition is close with material to be measured, but the basic role of thermal resistance material is different, and
It can continue to keep opposite zero degree environment in experimentation, also adapt to the temperature change of external environment.
2 bottom of outer cylinder is equipped with support base 11, and elevating mechanism is equipped in the support base 11, and the magnetic suspension gravity passes
Sensor is vertically moved by elevating mechanism and is adjusted.Support base 11 can also make outer cylinder 2 to install magnetic suspension gravity sensor
The relatively liftoff effect for generating air thermal isolation, further decreases external interference factor influence.The embodiment party of elevating mechanism herein
There are many formulas, is such as directly driven by cylinder or motor, gear, guide rail (rack gear) cooperate transmission, or drive silk by screw element
Rotation is become moving linearly by bar.But it is not restricted to this, is only used as the explanation of embodiment herein.
Inner cylinder 1 is placed in annular ice cube comprising magnet, is magnetically acted on magnetic suspension gravity sensor, Jin Erji by magnet
Calculate the quality for melting ice cube.Entire inner cylinder 1 includes that upper cover 4 is immersed in the mixture of ice and water of the splendid attire of outer cylinder 2 (heat in order to prevent
Amount exchange, because the ice water of inner cylinder 1 and outer cylinder 2 is all zero degree).Annular ice cube suspends in water always, heats to annular ice cube
Preceding magnetic suspension gravity sensor is shown: m0；ρ1For water density, ρ2For annular ice cube density, V0To heat preceding annular ice cube volume；
After heating a period of time: (ice cube does not melt completely at this time, and 1 temperature of inner cylinder still maintains always zero degree)
Magnetic suspension gravity sensor after ice cube heating is shown: m1；Ice concentration is 0.9g/cm^3 at 0 degree, according to ρ1gV-
Mg=(m1-m0) g, V is the volume for melting ice, then, whole process melts the quality of ice are as follows: m=9 (m1-m0)；
The heat for melting ice cube absorption all is from and power supply power supply: Q=Pt；P is power, t heating time；
According to the conservation of energy: Q=mL；L is the heat of fusion of ice
So:
The utility model surveys the knots modification of ice cube buoyancy and gravitational difference by using gravity sensor, obtains melting ice cube
Quality, advantage are as follows:
1. whole process system is exchanged with extraneous zero calory, the heat that power supply provides all is absorbed by ice cube；
2. heated using U-shaped heating tube 7, since ice cube is around 7 surrounding of heating tube, so, the heat of heating tube 7 directly to
Ice cube is given, has subtracted heat transfer water supply, again to the process of ice；
3. this measurement process covers calorifics, electricity, mechanics, the basis of Comprehensive Experiment can be become.
To sum up, inner cylinder 1 is placed in outer cylinder 2 by the utility model, inner cylinder is melted by using the heating tube 7 of U shape
1 annular ice cube obtains melting ice cube using the knots modification of magnetic suspension gravity sensor measure annular ice cube buoyancy and gravitational difference
Quality, realize the measurement of heat of fusion.Entire measurement process is exchanged with extraneous zero calory, and measured value is accurate.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion is signified
Device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this is practical
Novel limitation, at the same have been shown and described above the utility model basic principles and main features and the utility model it is excellent
Point, it should be understood by those skilled in the art that.
Claims (10)
1. magnetic suspension heat of fusion measuring instrument, including inner cylinder, outer cylinder and lid, which is characterized in that the lid include upper cover and
Lower cover forms closed inner cavity chamber, forms closed exocoel between the outer cylinder and upper cover between the lower cover and inner cylinder；
Be equipped with material to be measured in the inner cavity chamber, be equipped with thermal resistance material in the exocoel, the material to be measured include annular ice cube with it is cold
Water, and magnet is equipped in annular ice cube；
The lid is equipped with temperature demonstrator, and the temperature demonstrator runs through lid, and the sensing probe of temperature demonstrator is stretched
Enter in inner cavity chamber；
The lower end surface of the lower cover is equipped with heating tube, and the outer cylinder bottom is equipped with magnetic suspension gravity sensor.
2. magnetic suspension heat of fusion measuring instrument as described in claim 1, which is characterized in that the heating tube is U-shaped structure, and
Heating tube is installed by connection frame and is fixed.
3. magnetic suspension heat of fusion measuring instrument as claimed in claim 2, which is characterized in that the connection frame leans on heating tube one end
For disc-shaped structure.
4. magnetic suspension heat of fusion measuring instrument as claimed in claim 3, which is characterized in that be spaced between the upper cover and lower cover
Setting, and between be equipped with connecting rod.
5. magnetic suspension heat of fusion measuring instrument as claimed in claim 4, which is characterized in that between the inner cylinder and lower cover, outside
It is connected through a screw thread between cylinder and outer cover.
6. magnetic suspension heat of fusion measuring instrument as claimed in claim 4, which is characterized in that the connection frame, lower cover, wire barrel
The cavity for circuit connection is formed between upper cover, the cavity is additionally provided with Wiring port at upper cover.
7. magnetic suspension heat of fusion measuring instrument as claimed in claim 4, which is characterized in that in the thermal resistance material at least submerges
Cylinder, the inner barrel and outer barrel are made of heat insulator.
8. magnetic suspension heat of fusion measuring instrument as claimed in claim 1 or 2, which is characterized in that the heating tube is along annular ice
Block axis direction arrangement.
9. magnetic suspension heat of fusion measuring instrument as described in claim 1, which is characterized in that the thermal resistance material is ice water mixing
Object.
10. magnetic suspension heat of fusion measuring instrument as described in claim 1, which is characterized in that the outer cylinder bottom is equipped with support
Seat, the support base is interior to be equipped with elevating mechanism, and the magnetic suspension gravity sensor passes through elevating mechanism and vertically moves adjusting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920421901.6U CN209706983U (en) | 2019-03-30 | 2019-03-30 | Magnetic suspension heat of fusion measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920421901.6U CN209706983U (en) | 2019-03-30 | 2019-03-30 | Magnetic suspension heat of fusion measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209706983U true CN209706983U (en) | 2019-11-29 |
Family
ID=68646295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920421901.6U Expired - Fee Related CN209706983U (en) | 2019-03-30 | 2019-03-30 | Magnetic suspension heat of fusion measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209706983U (en) |
-
2019
- 2019-03-30 CN CN201920421901.6U patent/CN209706983U/en not_active Expired - Fee Related
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191129 Termination date: 20210330 |
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| CF01 | Termination of patent right due to non-payment of annual fee |