CN201387680Y - Air working demonstration device - Google Patents
Air working demonstration device Download PDFInfo
- Publication number
- CN201387680Y CN201387680Y CN200920018148U CN200920018148U CN201387680Y CN 201387680 Y CN201387680 Y CN 201387680Y CN 200920018148 U CN200920018148 U CN 200920018148U CN 200920018148 U CN200920018148 U CN 200920018148U CN 201387680 Y CN201387680 Y CN 201387680Y
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- cylinder
- gas
- valve
- gas cylinder
- air
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Abstract
The utility model relates to an air working demonstration device which comprises a first air bottle, a second air bottle and an air cylinder. The first air bottle is connected with the air cylinder through a first connecting pipe. The first air bottle is connected with the second air bottle through a second connecting pipe. The upper part and the lower part of the first air bottle are respectively provided with a first valve and a second valve. The first air bottle and the second air bottle are respectively connected with a temperature indicating device. The upper part of the air cylinder is provided with an air inlet pipe. A first one-way valve is arranged on the air inlet pipe. A second one-way valve is arranged on the first connecting pipe. The device has simple structure and good demonstration effect, shows the increase and decrease of the internal energy through the variation of the temperature indicating value, and is extraordinarily visualized.
Description
Technical field
The utility model relates to a kind of teaching aid, specifically, relates to a kind of gas acting apparatus for demonstrating.
Background technology
In the physics lesson of middle school, the lecture experiment that " gas is done work; interior can increasing, gas externally does work, interior can the minimizing " arranged, it is the important tests of the checking first law of thermodynamics, owing to be subjected to the restriction of experiment condition, also there is not instrumentation that this experiment is demonstrated, as only explanation in theory, directly perceived inadequately, be difficult for understanding.
The utility model content
Problem to be solved in the utility model is at above problem, and a kind of gas acting apparatus for demonstrating of simple in structure, good demonstration effect is provided.
For addressing the above problem, the technical scheme that the utility model adopted is: gas acting apparatus for demonstrating, comprise first gas cylinder, second gas cylinder and cylinder, described first gas cylinder is connected with cylinder by first connecting pipe, described first gas cylinder is connected with second gas cylinder by second connecting pipe, the described first gas cylinder upper and lower is respectively arranged with first valve and second valve, described first gas cylinder and second gas cylinder are connected with temperature indicating device respectively, described cylinder top is provided with draft tube, described draft tube is provided with first retaining valve, and described first connecting pipe is provided with second retaining valve.
A kind of concrete prioritization scheme, described temperature indicating device comprises temperature sensor and temperature display watch.
A kind of concrete prioritization scheme, the piston rod of described cylinder is connected with pedal, and described pedal is connected with spring.
A kind of concrete prioritization scheme, the described second gas cylinder bottom is provided with the 3rd valve.
The utility model is taked above technical scheme, have the following advantages: open first valve, close second valve and the 3rd valve, when cylinder piston moves downward, first one-way valve opens, second closed check valve, gas enters cylinder, when cylinder piston moves upward, first closed check valve, second one-way valve opens, make gas enter first gas cylinder, in the process of constantly in first gas cylinder, inflating, the temperature display watch registration that is connected with first gas cylinder constantly rises, explanation when the temperature display watch registration that is connected with first gas cylinder no longer rises, stops inflation to increasing in the gas acting, with first valve closing, open second valve, at this moment, the temperature display watch registration that is connected with first gas cylinder descends, the temperature display watch registration that is connected with second gas cylinder rises, illustrate that the gas in first gas cylinder externally can reduce in the acting, and the gas in first gas cylinder increases the gas internal energy in second gas cylinder to the acting of the gas in second gas cylinder, this apparatus structure is simple, good demonstration effect, by the variation of temperature display watch registration represent in can increase and minimizing, very directly perceived.
The utility model is described in further detail below in conjunction with drawings and Examples.
Description of drawings
Accompanying drawing is the structural representation of gas acting apparatus for demonstrating among the utility model embodiment.
Among the figure:
1-first gas cylinder, 2-first valve, 3-first connecting pipe, 4-first retaining valve, 5-second retaining valve, 6-cylinder, 7-piston, the 8-piston rod, 9-pedal, 10-spring, 11-second gas cylinder, 12-the 3rd valve, 13-second temperature sensor, 14-second temperature display watch, 15-second connecting pipe, 16-second valve, 17-first temperature sensor, 18-first temperature display watch, 19-draft tube
Embodiment
Embodiment: as shown in drawings, gas acting apparatus for demonstrating, comprise first gas cylinder 1, second gas cylinder 11 and cylinder 6, first gas cylinder 1 is connected with cylinder 6 by first connecting pipe 3, first gas cylinder 1 is connected with second gas cylinder 11 by second connecting pipe 15, first gas cylinder, 1 upper and lower is respectively arranged with first valve 2 and second valve 16, second gas cylinder, 11 bottoms are provided with the 3rd valve 12, first gas cylinder 1 and second gas cylinder 11 are connected with temperature indicating device respectively, cylinder 6 tops are provided with draft tube 19, draft tube 19 is provided with first retaining valve 4, first connecting pipe 3 is provided with second retaining valve 5, the piston rod 8 of cylinder 6 is connected with pedal 9, and pedal 9 is connected with spring 10.
Temperature indicating device comprises first temperature sensor 17, first temperature display watch 18 that is connected with first gas cylinder 1 and second temperature sensor 13, second temperature display watch 14 that is connected with second gas cylinder 11.
During use, open first valve 2, close second valve 16 and the 3rd valve 12, depress pedal 9, the piston 7 that piston rod 8 drives cylinder 6 moves downward, first retaining valve 4 is opened, second retaining valve 5 is closed, gas enters cylinder 6, unclamp pedal 9, the piston 7 of cylinder 6 moves upward, first retaining valve 4 is closed, second retaining valve 5 is opened, make gas enter first gas cylinder 1, in the process of constantly inflating in first gas cylinder 1, first temperature display watch, 18 registrations that are connected with first gas cylinder 1 constantly rise, explanation is to increasing in the gas acting, when temperature display watch 18 registrations that are connected with first gas cylinder 1 no longer rise, stop inflation, first valve 2 is closed, open second valve 16, at this moment, first temperature display watch, 18 registrations that are connected with first gas cylinder 1 descend, and second temperature display watch, 14 registrations that are connected with second gas cylinder 11 rise, illustrate that the gas in first gas cylinder 1 externally can reduce in the acting, and the gas in first gas cylinder 1 increases the gas internal energy in second gas cylinder to the gas acting in second gas cylinder 11, after experimental demonstration finishes, open the 3rd valve 12, gas is emitted.
Claims (4)
1, gas acting apparatus for demonstrating, it is characterized in that: comprise first gas cylinder (1), second gas cylinder (11) and cylinder (6), described first gas cylinder (1) is connected with cylinder (6) by first connecting pipe (3), described first gas cylinder (1) is connected with second gas cylinder (11) by second connecting pipe (15), described first gas cylinder (1) upper and lower is respectively arranged with first valve (2) and second valve (16), described first gas cylinder (1) and second gas cylinder (11) are connected with temperature indicating device respectively, described cylinder (6) top is provided with draft tube (19), described draft tube (19) is provided with first retaining valve (4), and described first connecting pipe (3) is provided with second retaining valve (5).
2, gas acting apparatus for demonstrating as claimed in claim 1, it is characterized in that: described temperature indicating device comprises temperature sensor (13,17) and temperature display watch (14,18).
3, gas acting apparatus for demonstrating as claimed in claim 1, it is characterized in that: the piston rod (8) of described cylinder (6) is connected with pedal (9), and described pedal (9) is connected with spring (10).
4, gas acting apparatus for demonstrating as claimed in claim 1, it is characterized in that: described second gas cylinder (11) bottom is provided with the 3rd valve (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920018148U CN201387680Y (en) | 2009-01-20 | 2009-01-20 | Air working demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920018148U CN201387680Y (en) | 2009-01-20 | 2009-01-20 | Air working demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201387680Y true CN201387680Y (en) | 2010-01-20 |
Family
ID=41580219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920018148U Expired - Fee Related CN201387680Y (en) | 2009-01-20 | 2009-01-20 | Air working demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201387680Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050035A (en) * | 2012-12-11 | 2013-04-17 | 安徽师范大学 | Refrigeration principle type display device |
| CN106952544A (en) * | 2017-03-28 | 2017-07-14 | 昆明理工大学 | The experimental provision and method of a kind of control Temperature of Electric Heater |
-
2009
- 2009-01-20 CN CN200920018148U patent/CN201387680Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050035A (en) * | 2012-12-11 | 2013-04-17 | 安徽师范大学 | Refrigeration principle type display device |
| CN106952544A (en) * | 2017-03-28 | 2017-07-14 | 昆明理工大学 | The experimental provision and method of a kind of control Temperature of Electric Heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100120 Termination date: 20110120 |