CN109308830A - Thermal expansion metal observes device - Google Patents
Thermal expansion metal observes device Download PDFInfo
- Publication number
- CN109308830A CN109308830A CN201710654070.2A CN201710654070A CN109308830A CN 109308830 A CN109308830 A CN 109308830A CN 201710654070 A CN201710654070 A CN 201710654070A CN 109308830 A CN109308830 A CN 109308830A
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- China
- Prior art keywords
- metal
- fixed
- thermal expansion
- metal block
- adjusting nut
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/16—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for science of heat
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- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
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- Pure & Applied Mathematics (AREA)
- Educational Administration (AREA)
- Computational Mathematics (AREA)
- Business, Economics & Management (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Primary Cells (AREA)
Abstract
A kind of thermal expansion metal observation device, is powered expansion contact after two pieces of METAL HEATING PROCESSs, lights small bulbs, can intuitively show the thermal expansion and contraction of metal in this way.At heating initial stage, there are the gap of a little between two metal blocks, circuit is in an off state, and small bulbs are not bright.After heating to a certain extent, due to metal heated expansion, the contact point of two metal blocks is touched, and circuit is connected, and small bulbs light.Prove that metal heat-expansion causes contact point to be touched.Alcolhol burner is removed, is cooled down to metal, after cooling to a certain extent, due to metal shrinkage, the contact point of two metal blocks is disconnected, and gap occurs, and small bulbs are extinguished, it was demonstrated that metal shrinkage causes contact point to disconnect.By the demonstration of the present apparatus, the thermal expansion and contraction of metal can be intuitively observed.
Description
Technical field
The present invention relates to a kind of laboratory apparatus, relate in particular to it is a kind of expansion contact after two pieces of METAL HEATING PROCESSs is powered,
Small bulbs are lighted, the thermal expansion metal observation device of the thermal expansion and contraction of metal can be directly displayed.
Background technique
When talking about the thermal expansion and contraction of metal in present physical knowledge, experiment is done often to prove, but use alcolhol burner
When burning metal, tend not to intuitively show, such experiment effect is very unsatisfactory, and effect is poor.
Summary of the invention
The purpose of the present invention is to overcome the deficiencies of the prior art, provides a kind of expansion contact after two pieces of METAL HEATING PROCESSs
It is powered, lights small bulbs, the thermal expansion metal observation device of the thermal expansion and contraction of metal can be directly displayed.
The technical solution adopted by the present invention to solve the technical problems is: a kind of thermal expansion metal observation device, including bottom
Seat and appliance plate, the fixed alcolhol burner in the middle part of pedestal, the right part of pedestal are fixed with right fixing terminal, are fixed in right fixing terminal
Right metallic rod, right metallic rod top are laterally fixed with one end of right screw rod, and the right screw rod other end installs right adjusting nut, right adjusting
Nut is fixedly connected with right metal block, and the left part portion of pedestal is fixed with left fixing terminal, left metallic rod is fixed in left fixing terminal,
Left metallic rod top is laterally fixed with left screw rod one end, and the left screw rod other end installs left adjusting nut, and left adjusting nut is fixed to be connected
Left metal block, fixed light bulb among appliance plate are connect, light bulb right end fixes right electrical terminals, and left electrical terminals are fixed in light bulb left end,
Electric appliance postlaminar part fixes battery, and anode end connects the bottom end of left metallic rod by conducting wire, and right electrical terminals are connected by conducting wire
Connect the bottom end of right metallic rod.
The invention has the advantages that being combined with powered-down road in order to preferably observe the thermal expansion and contraction of metal
Knowledge devises the present apparatus.The present apparatus is powered expansion contact after two pieces of METAL HEATING PROCESSs, lights small bulbs, in this way can be intuitively
Show the thermal expansion and contraction of metal.At heating initial stage, there are the gap of a little between two metal blocks, circuit, which is in, disconnects shape
State, small bulbs are not bright.After heating to a certain extent, due to metal heated expansion, the contact point of two metal blocks is touched
Touching, circuit are connected, and small bulbs light.Prove that metal heat-expansion causes contact point to be touched.Alcolhol burner is removed, is cooled down to metal, it is cooling
After to a certain extent, due to metal shrinkage, the contact point of two metal blocks is disconnected, and gap occurs, and small bulbs are extinguished, it was demonstrated that gold
Belonging to shrinkage causes contact point to disconnect.By the demonstration of the present apparatus, the thermal expansion and contraction of metal can be intuitively observed.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the structure chart of the embodiment of the present invention one.
Fig. 2 is the circuit diagram of the embodiment of the present invention one.
In figure: 1. right adjusting nuts, 2. alcolhol burners, 3. pedestals, 4. conducting wires, 5. batteries, 6. light bulbs, 7. right electrical terminals,
8. appliance plate, 9. right fixing terminals, 10. right metallic rods, 11. right metal blocks, 12. right screw rods, 13. left metal blocks, 14. left spiral shells
Bar, 15. left adjusting nuts, 16. left metallic rods, 17. left fixing terminals, 18. left electrical terminals.
Specific embodiment
In the embodiment shown in fig. 1, it is provided with right adjusting nut (1), alcolhol burner (2), pedestal (3), conducting wire (4), battery
(5), light bulb (6), right electrical terminals (7), appliance plate (8), right fixing terminal (9), right metallic rod (10), right metal block (11),
Right screw rod (12), left metal block (13), left screw rod (14), left adjusting nut (15), left metallic rod (16), left fixing terminal
(17), left electrical terminals (18).
Implement thermal expansion metal observation device of the invention, including pedestal (3) and appliance plate (8), the middle part of pedestal (3) are consolidated
Determine alcolhol burner (2), the right part of pedestal (3) is fixed with right fixing terminal (9), is fixed with right metallic rod on right fixing terminal (9)
(10), right metallic rod (10) top is laterally fixed with one end of right screw rod (12), and right screw rod (12) other end installs right adjusting spiral shell
Female (1), right adjusting nut (1) are fixedly connected right metal block (11), and the left part portion of pedestal (3) is fixed with left fixing terminal (17),
It being fixed with left metallic rod (16) on left fixing terminal (17), left metallic rod (16) top is laterally fixed with left screw rod (14) one end,
Left screw rod (14) other end installs left adjusting nut (15), and left adjusting nut (15) is fixedly connected with left metal block (13), appliance plate
(8) intermediate fixed light bulb (6), the fixed right electrical terminals (7) of light bulb (6) right end, the fixed left electrical terminals in light bulb (6) left end
(18), appliance plate (8) rear portion is fixed battery (5), and battery (5) positive terminal connects the bottom end of left metallic rod (16) by conducting wire, right
Electrical terminals (7) connect the bottom end of right metallic rod (10) by conducting wire (4).
Implement thermal expansion metal observation device of the invention, battery (5) positive terminal is electrically connected left metal block (13), battery
(5) negative pole end is electrically connected light bulb (6) one end, and light bulb (6) other end is electrically connected right metal block (11).
Implement thermal expansion metal observation device of the invention, between being equipped between right metal block (11) and left metal block (13)
Gap, the gap can be adjusted by left adjusting nut (15) and right adjusting nut (1).The flame of alcolhol burner (2) should be set
The lower part of right metal block (11) and left metal block (13).The voltage of battery (5) and light bulb (6) is 3 volts to 6 volts.
Implement thermal expansion metal observation device of the invention, in order to preferably observe the thermal expansion and contraction of metal, knot
The knowledge in relation to circuit is closed, the present apparatus is devised.The present apparatus is powered expansion contact after two pieces of METAL HEATING PROCESSs, lights small bulbs,
The thermal expansion and contraction of metal can be intuitively shown in this way.At heating initial stage, there are the gap of a little, electricity between two metal blocks
Road is in an off state, and small bulbs are not bright.After heating to a certain extent, due to metal heated expansion, two metal blocks
Contact point is touched, and circuit is connected, and small bulbs light.Prove that metal heat-expansion causes contact point to be touched.Alcolhol burner is removed, to gold
Belong to cooling, after cooling to a certain extent, due to metal shrinkage, the contact point of two metal blocks is disconnected, and gap, small bulbs occurs
Extinguish, it was demonstrated that metal shrinkage causes contact point to disconnect.By the demonstration of the present apparatus, it can intuitively observe that the heat expansion of metal is cold
Contracting phenomenon.
Implement the present invention, effect is fine.
Claims (5)
1. a kind of thermal expansion metal observes device, including pedestal (3) and appliance plate (8), which is characterized in that in the pedestal (3)
Middle part it is fixed alcolhol burner (2), the right part of pedestal (3) is fixed with right fixing terminal (9), is fixed with the right side on right fixing terminal (9)
Metallic rod (10), right metallic rod (10) top are laterally fixed with one end of right screw rod (12), and right screw rod (12) other end installation is right
Adjusting nut (1), right adjusting nut (1) are fixedly connected right metal block (11), and the left part portion of pedestal (3) is fixed with left fixing terminal
(17), it is fixed with left metallic rod (16) on left fixing terminal (17), left metallic rod (16) top is laterally fixed with left screw rod (14)
One end, left screw rod (14) other end install left adjusting nut (15), and left adjusting nut (15) is fixedly connected left metal block (13), electricity
Among device plate (8) fixed light bulb (6), the fixed right electrical terminals (7) of light bulb (6) right end, the fixed left electrical terminals in light bulb (6) left end
(18), appliance plate (8) rear portion is fixed battery (5), and battery (5) positive terminal connects the bottom end of left metallic rod (16) by conducting wire, right
Electrical terminals (7) connect the bottom end of right metallic rod (10) by conducting wire (4).
2. thermal expansion metal according to claim 1 observes device, feature is electrically connected left in the battery (5) positive terminal
Metal block (13), battery (5) negative pole end are electrically connected light bulb (6) one end, and light bulb (6) other end is electrically connected right metal block (11).
3. thermal expansion metal according to claim 1 observes device, feature is in the right metal block (11) and left metal
Block is equipped with gap between (13), which can be adjusted by left adjusting nut (15) and right adjusting nut (1).
4. thermal expansion metal according to claim 1 observes device, feature should be set in the flame of the alcolhol burner (2)
The lower part of right metal block (11) and left metal block (13).
5. thermal expansion metal according to claim 1 observes device, electricity of the feature in the battery (5) and light bulb (6)
Pressure is 3 volts to 6 volts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710654070.2A CN109308830A (en) | 2017-07-26 | 2017-07-26 | Thermal expansion metal observes device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710654070.2A CN109308830A (en) | 2017-07-26 | 2017-07-26 | Thermal expansion metal observes device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109308830A true CN109308830A (en) | 2019-02-05 |
Family
ID=65205048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710654070.2A Withdrawn CN109308830A (en) | 2017-07-26 | 2017-07-26 | Thermal expansion metal observes device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109308830A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201527732U (en) * | 2009-10-15 | 2010-07-14 | 马誉宁 | Demonstration device for expansion with heat and contraction with cold |
| CN202487037U (en) * | 2012-04-08 | 2012-10-10 | 王世永 | Physical experiment demonstration device |
| CN203276669U (en) * | 2013-06-01 | 2013-11-06 | 司继章 | Demonstrator for thermal expansion and conductor and insulator |
| CN104077942A (en) * | 2014-06-10 | 2014-10-01 | 李建荣 | Solid thermal expansion and cold contraction demonstrator |
| CN104123871A (en) * | 2013-04-28 | 2014-10-29 | 陈曦玲 | Metal thermal expansion and cold contraction demonstration instrument |
-
2017
- 2017-07-26 CN CN201710654070.2A patent/CN109308830A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201527732U (en) * | 2009-10-15 | 2010-07-14 | 马誉宁 | Demonstration device for expansion with heat and contraction with cold |
| CN202487037U (en) * | 2012-04-08 | 2012-10-10 | 王世永 | Physical experiment demonstration device |
| CN104123871A (en) * | 2013-04-28 | 2014-10-29 | 陈曦玲 | Metal thermal expansion and cold contraction demonstration instrument |
| CN203276669U (en) * | 2013-06-01 | 2013-11-06 | 司继章 | Demonstrator for thermal expansion and conductor and insulator |
| CN104077942A (en) * | 2014-06-10 | 2014-10-01 | 李建荣 | Solid thermal expansion and cold contraction demonstrator |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190205 |