CN210639114U - Device for measuring linear expansion coefficient of material at low temperature - Google Patents
Device for measuring linear expansion coefficient of material at low temperature Download PDFInfo
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- CN210639114U CN210639114U CN201921464553.7U CN201921464553U CN210639114U CN 210639114 U CN210639114 U CN 210639114U CN 201921464553 U CN201921464553 U CN 201921464553U CN 210639114 U CN210639114 U CN 210639114U
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Abstract
The utility model discloses a material linear expansion coefficient measuring device under low temperature, including the base, the fixed low-temperature heating electric stove that is equipped with in middle part on base top, the both sides on base top are all fixed and are equipped with the guide post, and the column wall department interlude of two guide posts is connected with the guide block, fixes being equipped with the crossbeam between two guide blocks, and the fixed guide seat that is equipped with in middle part on crossbeam top, the inside cooperation of guide seat are connected with the amesdial, the beneficial effects of the utility model are that: the utility model relates to a material linear expansion coefficient measuring device under low temperature through the heat exchanger that separates that is equipped with, avoids the heat to leak, leads to the ambient temperature too high, influences the experimenter operation, through the vertical low temperature heating electric stove of placing, guide post and the guide block that is equipped with, is convenient for reduce to take up an area of and connects, makes whole device portable simultaneously, and convenient operation through brace table and the spacing groove that is equipped with, the restriction treats the state of test bar, improves measurement accuracy height.
Description
Technical Field
The utility model relates to a measuring device, in particular to material linear expansion coefficient measuring device under low temperature.
Background
The linear expansion coefficient is a physical term, sometimes also referred to as the linear elastic coefficient, and indicates the degree to which a material expands or contracts. The linear expansion coefficient of a certain temperature point and the linear expansion coefficient of a certain temperature interval are divided, and the latter is called as an average linear expansion coefficient. The former is the elongation per degree of increase in the material per unit length, and the average linear expansion coefficient is the average elongation per degree of increase in temperature per liter of the material per unit length over a certain temperature interval.
Measuring device need be used to linear expansion coefficient's measurement, but current measuring device still has some weak points, for example current linear expansion coefficient measuring device portable, transversely places and leads to the volume great, occupies great area, and measurement accuracy is not high and use the limitation great, and during current measurement volume measurement simultaneously, can give off great heat, leads to the device ambient temperature higher, influences the experimenter operation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a material linear expansion coefficient measuring device under low temperature to solve the inconvenient carrying that proposes in the above-mentioned background art, transversely place and lead to the volume great, occupy great area, measurement accuracy is not high and use the limitation great, and when current survey volume was measured simultaneously, can distribute great heat, it is higher to lead to the device ambient temperature, influences the problem of experimenter operation.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a material linear expansion coefficient measuring device under low temperature, includes the base, the fixed low-temperature heating electric stove that is equipped with in middle part on base top, the fixed heating wire that is equipped with in inside of low-temperature heating electric stove, the furnace chamber has been seted up at the middle part of low-temperature heating electric stove, the both sides on base top are all fixed and are equipped with the guide post, two the column wall department interlude of guide post is connected with the guide block, two fixed crossbeam that is equipped with between the guide block, the fixed guide holder that is equipped with in middle part on crossbeam top, the inside cooperation of guide holder is connected with the amesdial, the detection end fixedly connected with quartzy ejector pin of amesdial, the one end contact connection of.
As an optimized technical scheme of the utility model, the outer wall department through connection of quartzy ejector pin has the heat exchanger that separates.
As an optimal technical scheme of the utility model, the fixed brace table that is equipped with in bottom of furnace chamber, the fixed spacing groove that is equipped with in middle part of brace table, just the spacing groove is connected with the examination stick cooperation that awaits measuring.
As an optimized technical scheme of the utility model, the spacing groove is in on the same central line with the quartz ejector pin.
As an optimized technical scheme of the utility model, the fixed copper post wick that is equipped with of inside wall of furnace chamber.
As an optimal technical scheme of the utility model, control button is installed at the edge on base top, the heating wire passes through control button and external power supply electric connection.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model relates to a material linear expansion coefficient measuring device under low temperature through the heat exchanger that separates that is equipped with, avoids the heat to leak, leads to the ambient temperature too high, influences the experimenter operation, through the vertical low temperature heating electric stove of placing, guide post and the guide block that is equipped with, is convenient for reduce to take up an area of and connects, makes whole device portable simultaneously, and convenient operation through brace table and the spacing groove that is equipped with, the restriction treats the state of test bar, improves measurement accuracy height.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic view of the sectional structure of the low temperature electric heating furnace of the present invention;
fig. 3 is an enlarged schematic view of the a position of the present invention.
In the figure: 1. a base; 2. heating the electric furnace at a low temperature; 3. a guide post; 4. a guide block; 5. a cross beam; 6. a guide seat; 7. a dial indicator; 8. a control button; 9. a copper cylinder furnace core; 10. an electric heating wire; 11. a support table; 12. a limiting groove; 13. a furnace chamber; 14. a quartz ejector rod; 15. a heat shield; 16. a bar to be tested.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Please refer to fig. 1-3, the utility model provides a material linear expansion coefficient measuring device under low temperature, including base 1, the fixed low temperature electric stove 2 that is equipped with in middle part on base 1 top, the fixed heating wire 10 that is equipped with in inside of low temperature electric stove 2, furnace chamber 13 has been seted up at the middle part of low temperature electric stove 2, the equal fixed guide post 3 that is equipped with in both sides on base 1 top, the column wall department interlude of two guide posts 3 is connected with guide block 4, the fixed crossbeam 5 that is equipped with between two guide block 4, the fixed guide holder 6 that is equipped with in middle part on crossbeam 5 top, the inside cooperation of guide holder 6 is connected with amesdial 7, the detection end fixedly connected with quartzy ejector pin 14 of amesdial 7, the one end contact connection of quartzy ejector pin 14.
Preferably, the outer wall department through connection of quartz ejector pin 14 has heat exchanger 15 that separates, avoid the heat to leak, lead to the ambient temperature too high, influence the experimenter operation, the fixed brace table 11 that is equipped with in bottom of furnace chamber 13, the fixed spacing groove 12 that is equipped with in middle part of brace table 11, and spacing groove 12 is connected with the cooperation of waiting to test the stick 16, be convenient for better restrain the state of waiting to test the stick 16, improve measuring result, spacing groove 12 is in same central line with quartz ejector pin 14, be convenient for quartz ejector pin 14 is aimed at waiting to test the stick 16, improve measuring result, the fixed copper column wick 9 that is equipped with of inside wall of furnace chamber 13, improve heat conduction efficiency, avoid heat loss too much, control button 8 is installed to the edge on base 1 top, heating wire 10 passes through control button 8 and external power supply electric connection, the experimenter operation control of being.
When in specific use, the utility model relates to a device for measuring the linear expansion coefficient of a material at low temperature, firstly, an experimenter grinds the material to be tested into a bar 16 to be tested, then the bar 16 to be tested is placed inside a limiting groove 12 by an external tool, the bar 16 to be tested is prevented from inclining, the measuring result is improved, then the height of two guide blocks 4 is adjusted, one end of the quartz ejector rod 14 is in contact connection with a rod to be tested 16, and then the quartz ejector rod is connected to the top end of the low-temperature heating electric furnace 2 through the sliding heat insulation cover 15, so that the phenomenon that the ambient temperature is too high to influence the operation of experimenters due to heat leakage is avoided, finally the control button 8 is started, so that the heating wire 10 generates low-temperature heat after being electrified, the rod 16 to be tested expands at a low temperature, because the expansion generates displacement, the displacement is transmitted to the dial indicator 7 through the quartz ejector rod 14, and the expansion amount under different low-temperature conditions can be read.
In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A device for measuring the linear expansion coefficient of a material at low temperature comprises a base (1) and is characterized in that, a low-temperature electric heating furnace (2) is fixedly arranged in the middle of the top end of the base (1), an electric heating wire (10) is fixedly arranged inside the low-temperature electric heating furnace (2), a furnace chamber (13) is arranged in the middle of the low-temperature electric heating furnace (2), guide columns (3) are fixedly arranged on two sides of the top end of the base (1), guide blocks (4) are inserted and connected to the column walls of the two guide columns (3), a cross beam (5) is fixedly arranged between the two guide blocks (4), a guide seat (6) is fixedly arranged in the middle of the top end of the cross beam (5), a dial indicator (7) is connected inside the guide seat (6) in a matching way, the detection end of the dial indicator (7) is fixedly connected with a quartz ejector rod (14), one end of the quartz ejector rod (14) is in contact connection with a rod (16) to be tested.
2. The device for measuring the linear expansion coefficient of the material at the low temperature according to claim 1, wherein: the outer wall of the quartz ejector rod (14) is connected with a heat insulation cover (15) in a penetrating mode.
3. The device for measuring the linear expansion coefficient of the material at the low temperature according to claim 1, wherein: the bottom of furnace chamber (13) is fixed and is equipped with brace table (11), the middle part of brace table (11) is fixed and is equipped with spacing groove (12), just spacing groove (12) are connected with the cooperation of examination stick (16).
4. The device for measuring the linear expansion coefficient of the material at the low temperature according to claim 3, wherein: the limiting groove (12) and the quartz ejector rod (14) are positioned on the same central line.
5. The device for measuring the linear expansion coefficient of the material at the low temperature according to claim 1, wherein: and a copper column furnace core (9) is fixedly arranged on the inner side wall of the furnace chamber (13).
6. The device for measuring the linear expansion coefficient of the material at the low temperature according to claim 1, wherein: control button (8) are installed to the edge on base (1) top, heating wire (10) are through control button (8) and external power electric connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921464553.7U CN210639114U (en) | 2019-09-04 | 2019-09-04 | Device for measuring linear expansion coefficient of material at low temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921464553.7U CN210639114U (en) | 2019-09-04 | 2019-09-04 | Device for measuring linear expansion coefficient of material at low temperature |
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| Publication Number | Publication Date |
|---|---|
| CN210639114U true CN210639114U (en) | 2020-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921464553.7U Active CN210639114U (en) | 2019-09-04 | 2019-09-04 | Device for measuring linear expansion coefficient of material at low temperature |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264690A (en) * | 2021-12-22 | 2022-04-01 | 中钢新型材料股份有限公司 | Graphite thermal expansion coefficient testing method for improving testing precision |
-
2019
- 2019-09-04 CN CN201921464553.7U patent/CN210639114U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264690A (en) * | 2021-12-22 | 2022-04-01 | 中钢新型材料股份有限公司 | Graphite thermal expansion coefficient testing method for improving testing precision |
| CN114264690B (en) * | 2021-12-22 | 2023-06-23 | 赛迈科先进材料股份有限公司 | Graphite thermal expansion coefficient testing method for improving testing precision |
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