CN203824946U - Experiment instrument for determining thermal expansivity of metal - Google Patents
Experiment instrument for determining thermal expansivity of metal Download PDFInfo
- Publication number
- CN203824946U CN203824946U CN201420223608.6U CN201420223608U CN203824946U CN 203824946 U CN203824946 U CN 203824946U CN 201420223608 U CN201420223608 U CN 201420223608U CN 203824946 U CN203824946 U CN 203824946U
- Authority
- CN
- China
- Prior art keywords
- heat conduction
- conduction trough
- experiment instrument
- aluminum
- heating pipe
- 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
Links
Abstract
The utility model relates to an experiment instrument for determining thermal expansivity of metal. The experiment instrument comprises a cuboid case, wherein a heating pipe is arranged at the lower part in the case, and a heat conduction trough made of aluminum or aluminum alloy is formed in the upper part of the heating pipe; a large groove is formed in the lower part of the heat conduction trough, and the heating pipe is mutually clamped with the heat conduction trough through the large groove; a small groove is formed in the upper part of the heat conduction trough, and a positioning pin is arranged at one end of the small groove. Aiming at the defects and deficiencies of the existing instrument, the experiment instrument adopts the heating pipe to heat and transfers heat to the heat conduction trough made of aluminum or aluminum alloy; the temperature of the heat conduction trough can be uniform and stable by utilizing high thermal conductivity and large specific heat capacity of aluminum. A plurality of kinds of long and thin samples can be embedded in the small grove formed in the upper part of the heat conduction trough in a close arrangement manner. The experiment instrument is convenient to use, and the detection result is precise.
Description
Technical field
The utility model relates to a kind of experimental apparatus, is specially a kind of for measuring the experiment instrument of thermal expansion metal coefficient.
Background technology
In physics experiment teaching, the linear expansion coefficient while conventionally adopting the metal heated expansion of mensuration is studied the rule of material thermal expansion at present.Early stage experiment is often by water vapor heating of metal sample, and owing to there is inconvenience, now substantially abandoning need not.The mensuration modes that adopt, for sample is placed in instrument heating tube and passes into hot water heating, produce tiny length and change more after test button is heated at present, then adopt clock gauge or optical lever to measure; Its shortcoming of the method is that hot water temperature can not exceed 100 degree, and heating amplitude is little, and the thermal expansion length after therefore making sample be heated is less, affects the raising of measuring accuracy.In addition this class experimental apparatus was purchased after a period of time, and the gateway place of water and sample pass heating tube place and all easily leak, and due to heating tube length restriction, the length selection range of sample is generally less, and sample type can only be single kind conventionally.
Summary of the invention
For the problems referred to above, the utility model provide a kind of use more convenient, measure the more accurate experimental apparatus of thermal expansion metal coefficient results.
For addressing the above problem, the utility model provides a kind of experiment instrument of measuring thermal expansion metal coefficient, comprise a rectangular parallelepiped casing, in casing, below is provided with a heating tube, heating tube top is provided with the thermal trough that a material is aluminum or aluminum alloy, described thermal trough below has a big groove, and heating tube engages with thermal trough mutually by big groove; Thermal trough top has a little groove, and one end of little groove is provided with register pin.
The beneficial effects of the utility model are: the utility model is for existing above-mentioned defect and the deficiency existing with instrument, with electric heater for heating, heat is reached on a thermal trough made from aluminum or aluminum alloy, utilize high-termal conductivity and the large specific heat capacity of aluminium, make the temperature of thermal trough all even stable.Offer a little groove on thermal trough top, in little groove, can be close to the mode of arrangement, embed the elongated sample of several unlike materials.Its advantage is as follows: 1, the length of sample can be got higher value, reaches existing 1.5-2 times with instrument sample; 2, sample is close to thermal trough, can think that the temperature of thermal trough is the temperature of sample when mensuration, is convenient to measure; 3, sample heating can reach 150 DEG C, and increasing extent of temperature is about existing 2 times with instrument, can determine comparatively accurately thermal expansion metal coefficient.
Brief description of the drawings
Be described in further detail with regard to embodiment of the present utility model below in conjunction with accompanying drawing, wherein:
Fig. 1 is structural representation of the present utility model.
Embodiment
With reference to a kind of experiment instrument of measuring thermal expansion metal coefficient shown in Fig. 1, comprise a rectangular parallelepiped casing 5, the interior below of casing 5 is provided with a heating tube 1, heating tube 1 top is provided with the thermal trough 2 that a material is aluminum or aluminum alloy, thermal trough 2 belows have a big groove 6, and heating tube 1 engages with thermal trough 2 mutually by big groove 6; The top of thermal trough 2 has a little groove 7, the interior mode that can be close to arrangement of little groove 7, embed the elongated sample 3 of several unlike materials, one end of little groove 7 is provided with register pin 4, by this register pin 4, one end of sample 3 is fixed on thermal trough 2, the other end of sample 3 can be with the temperature free expansion that raises.
When mensuration, because thermal trough 2 and sample 3 fit tightly, can think that the temperature of thermal trough 2 is identical with the temperature of sample 3, adopt the temperature of temperature sensor measurement thermal trough 2, and measure the thermal expansion length of sample 3 in relevant temperature by reading microscope; Simultaneously can be on sample 3 position of different length,, can measure the thermal expansion length variations of sample 3 in the time of different temperatures, and then extrapolate the thermal expansivity of sample 3 as length mark by recess or color.
The above; it is only the better embodiment of the utility model; but the utility model protection domain is not limited to this; any be familiar with those skilled in the art the utility model disclose technical scope in; the variation that can expect easily or replacement, within all should being encompassed in protection domain of the present utility model.Therefore the utility model protection domain is as the criterion with the protection domain of claims.
Claims (1)
1. measure the experiment instrument of thermal expansion metal coefficient for one kind, it is characterized in that: comprise a rectangular parallelepiped casing, in casing, below is provided with a heating tube, heating tube top is provided with the thermal trough that a material is aluminum or aluminum alloy, described thermal trough below has a big groove, and heating tube engages with thermal trough mutually by big groove; Thermal trough top has a little groove, and one end of little groove is provided with register pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420223608.6U CN203824946U (en) | 2014-05-05 | 2014-05-05 | Experiment instrument for determining thermal expansivity of metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420223608.6U CN203824946U (en) | 2014-05-05 | 2014-05-05 | Experiment instrument for determining thermal expansivity of metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203824946U true CN203824946U (en) | 2014-09-10 |
Family
ID=51480429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420223608.6U Expired - Fee Related CN203824946U (en) | 2014-05-05 | 2014-05-05 | Experiment instrument for determining thermal expansivity of metal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203824946U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112213353A (en) * | 2020-09-09 | 2021-01-12 | 中国科学院金属研究所 | Method for testing linear expansion coefficient |
-
2014
- 2014-05-05 CN CN201420223608.6U patent/CN203824946U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112213353A (en) * | 2020-09-09 | 2021-01-12 | 中国科学院金属研究所 | Method for testing linear expansion coefficient |
| CN112213353B (en) * | 2020-09-09 | 2021-10-22 | 中国科学院金属研究所 | Method for testing linear expansion coefficient |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2011053077A5 (en) | ||
| CN105717156B (en) | The crosspointer thermal pulse thermal characteristic measurement system and method for probe spacing can be demarcated in situ | |
| RU2466365C1 (en) | Self-contained wireless device for measuring temperature of surface of object | |
| CN204389067U (en) | A kind of shallow type temperature checking stove that declines | |
| CN109613051B (en) | Device and method for measuring Seebeck coefficient of material by using contrast method | |
| CN103713013B (en) | Test tubulose material shaft is to the device of coefficient of heat conductivity | |
| CN203824946U (en) | Experiment instrument for determining thermal expansivity of metal | |
| CN101021502A (en) | Low-temperature resistance temperature coefficient tester | |
| CN206601352U (en) | For determining each device to thermal conductivity factor of frozen soil | |
| CN203849193U (en) | Indoor rock sample heat conduction coefficient testing device | |
| CN203455295U (en) | Phase-transition temperature tester | |
| CN203299283U (en) | An apparatus for measuring the conductivity of high-temperature fused salt | |
| CN104359935A (en) | Melting point detector | |
| CN203838090U (en) | Thermal expansion material performance testing device | |
| CN204027490U (en) | A kind of experimental provision that carrys out slotted line expansion coefficient with clock gauge | |
| CN218271829U (en) | Modified asphalt density measuring device | |
| CN203824947U (en) | Teaching experimental apparatus for determination of thermal expansion coefficients of metals | |
| CN203100936U (en) | Surface thermometer calibrating device | |
| CN204346960U (en) | The visual cooling bath used in oil kryoscope | |
| CN204086184U (en) | A kind of system simultaneously can surveying solid material heat conductivity and thermal diffusivity | |
| RU2594388C2 (en) | Method of determining thermal conductivity coefficient of liquid heat-insulating coatings | |
| CN202421102U (en) | Device for measuring thermal conductivity coefficient of gas | |
| CN202210002U (en) | Thermocouple zero compensation arrangement | |
| CN208350690U (en) | A kind of solid material linear expansion coefficient determining device | |
| CN102636697B (en) | Device for dynamically measuring performance of insulating medium |
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: 20140910 Termination date: 20160505 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |