CN104680895B - Teaching experimental device about influence of air pressure on boiling point - Google Patents
Teaching experimental device about influence of air pressure on boiling point Download PDFInfo
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- CN104680895B CN104680895B CN201510060868.5A CN201510060868A CN104680895B CN 104680895 B CN104680895 B CN 104680895B CN 201510060868 A CN201510060868 A CN 201510060868A CN 104680895 B CN104680895 B CN 104680895B
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- boiling point
- ccd
- air pressure
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- 238000009835 boiling Methods 0.000 title claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000002474 experimental method Methods 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Classifications
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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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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Algebra (AREA)
- Business, Economics & Management (AREA)
- Mathematical Physics (AREA)
- Computational Mathematics (AREA)
- Pure & Applied Mathematics (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Examining Or Testing Airtightness (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention discloses a teaching experimental device about influence of air pressure on a boiling point, comprising an air-tight chamber; a water container is arranged in the air-tight chamber, and a heater used for heating the water container is also arranged in the air-tight chamber; an air compressor, an air pressure controller and a vacuum pump that are successively connected are arranged out of the air-tight chamber; the air compressor, the air pressure controller and the vacuum pump are further respectively connected with the air-tight chamber; a CCD (charge coupled device) camera and a CCD display are further arranged out of the air-tight chamber; the CCD camera is fixed out of the air-tight chamber, so as to collect boiling point change images of water in the water container; and the CCD camera is connected with the CCD display. The teaching experimental device disclosed by the invention not only clearly expresses the influence of the air pressure on the boiling point, but also has a higher safety coefficient.
Description
Technical field
The invention belongs to the demonstrating experiment device in middle and primary schools' physics/Science Teaching, and in particular to one kind is with regard to gas
Press the experiment device for teaching affected on boiling point.
Background technology
Total well known, air pressure has a very big impact to boiling point, and where air pressure height, corresponding boiling point is relatively low；Air pressure is low
Where, corresponding boiling point is higher.In middle and primary schools' physics or natural science applied teaching, in order to allow students to be more readily apparent from
Impact of the air pressure to boiling point, generally adopts such a experiment device for teaching：Water is filled using boiling flask, lower section passes through alcolhol burner
Heating, observes it and seethes with excitement under atmospheric pressure state the required time.In order to observe the boiling of the water under low pressure or high pressure conditions
Situation, then the oral area in boiling flask connects syringe, and realizes sealing, by the way that syringe is to injected gas in bottle or takes out
Go out gas, so as to build high pressure or environment under low pressure, then the time observed required for water seethes with excitement under high pressure or low-pressure state.
But, this kind of teaching experimental equipment, by syringe to control boiling flask in air pressure, not only air pressure control not
Accurately, experiment effect is not obvious, but also there is serious potential safety hazard.
The content of the invention
It is an object of the invention to：For problem present in existing experiment device for teaching, there is provided one kind is with regard to air pressure
The experiment device for teaching affected on boiling point, air pressure control is accurate, and experiment effect is obvious, it is easier to understand, and security is more preferable.
To achieve these goals, the technical solution used in the present invention is：
A kind of boiling point is affected experiment device for teaching with regard to air pressure, including confined chamber,
Closed interior is placed with water receptacle, and for adding the heater of hot water tank；
Air compressor machine, gas pressure regulator and the vavuum pump being sequentially connected, and air compressor machine, gas pressure regulator are provided with outside confined chamber
Also it is connected with confined chamber respectively with vavuum pump；
Closed outdoor is additionally provided with CCD camera and CCD displays, and CCD camera is fixed on closed outdoor, gathers the water capacity
The boiling point modified-image of water in device, and CCD camera is connected with CCD displays.
Preferably, described confined chamber adopts cylindric glass tube, and in upper and lower ends respectively by upper cover plate and lower cover
Plate is sealed to form；It is connected by sealing screw rod between upper cover plate and lower cover, while in confined chamber and upper cover plate, confined chamber
Seal member is provided between lower cover.
Preferably, also including the air gauge for inserting closed interior.
Preferably, described closed outdoor is additionally provided with the safety valve being connected with confined chamber.
Preferably, valve one, vavuum pump and confined chamber are additionally provided with the connecting line of described air compressor machine and confined chamber
Connecting line on be additionally provided with valve two.
Preferably, described closed outdoor is additionally provided with temperature control display, temperature control display and closed interior
Heater be connected.
As a result of above-mentioned technical proposal, the invention has the beneficial effects as follows：
A kind of experiment device for teaching affected on boiling point with regard to air pressure of the present invention, by gas pressure regulator sky is controlled respectively
Press and vacuum machine are controlled more accurate, it is ensured that experiment effect is obvious, it is easier to understand realizing the air pressure of closed interior；Together
When be provided with CCD camera and CCD displays, record experimental data, so as to follow-up further analysis, summarize；And also set
It is equipped with relief valve, it is ensured that the security of experimental provision.
Description of the drawings
Fig. 1 is the theory diagram of the present invention.
Mark in figure：1-CCD cameras, 2-CCD displays, 3- water receptacles, 4- heaters, 5- seal members, 6- valves
Two, 7- vavuum pump, 8- safety valves, 9- temperature control displays, 10- gas pressure regulators, 11- air compressor machines, 12- valves one, under 13-
Cover plate, 14- sealing screw rods, 15- confined chambers, 16- upper cover plates, 17- air gauges.
Specific embodiment
With reference to Fig. 1, a kind of experiment device for teaching affected on boiling point with regard to air pressure of the present invention, including confined chamber 15 are close
Water receptacle 3 is placed with closed chamber 15, and for adding the heater 4 of hot water tank 3, by heater 4 plus hot water tank 3
Water, until boiling.
It is provided with air compressor machine 11, gas pressure regulator 10 and the vavuum pump 7 being sequentially connected outside confined chamber 15, and air compressor machine 11,
Gas pressure regulator 10 and vavuum pump 7 are also connected with confined chamber 15 respectively, also set on the connecting line of air compressor machine 11 and confined chamber 15
It is equipped with the connecting line of valve 1, vavuum pump 7 and confined chamber 15 and is additionally provided with valve 26.Examined by gas pressure regulator 10
The air pressure surveyed in confined chamber 15, and as needed, air compressor machine 11 and vavuum pump 7 are controlled respectively, to provide high pressure and environment under low pressure.
In the case where air compressor machine 11 works, valve 1 can be opened, close valve 26；In the case that vacuum machine works, can close
Valve 1, opens valve 26, it is ensured that air pressure precise control, non-interference.
CCD camera 1CCD displays 2 are additionally provided with outside confined chamber 15, CCD camera 1 is fixed on outside confined chamber 15, is adopted
The boiling point modified-image of water in collecting container 3, and CCD camera 1 is connected with CCD displays 2.Water is gathered by CCD camera 1
The situation of change of the water in container 3, and image is converted into by CCD displays 2 presents.
Confined chamber 15 adopts cylindric glass tube, and sealed by upper cover plate 16 and lower cover 13 respectively in upper and lower ends and
Into；It is connected by sealing screw rod 14 between upper cover plate 16 and lower cover 13, while in confined chamber 15 and upper cover plate 16, closed
Seal member 5 is provided between room 15 and lower cover 13.
The experiment device for teaching of the present invention also includes the air gauge 17 in insertion confined chamber 15.Can be real-time by air gauge 17
Air pressure in observation confined chamber 15, prevents air pressure too high or too low, and the potential safety hazard for occurring.
The safety valve 8 being connected with confined chamber 15 is additionally provided with outside confined chamber 15, when the air pressure in confined chamber 15 is too high or
When too low, the pressure release of safety valve 8 can be passed through, it is ensured that indoor air pressure is within safety valve 8 is worth.
Temperature control display 9, the heater in temperature control display 9 and confined chamber 15 are additionally provided with outside confined chamber 15
4 are connected.The temperature of heater 4 real-time monitoring and can be controlled by temperature control display 9, to reach suitable heating-up temperature.
Experimentation：Close valve 1 and valve 26 so that confined chamber 15 is atmospheric pressure state；Then respectively by temperature
Degree control display 9 control heater 4 under various temperature state plus hot water tank 3 in water, and by CCD camera 1,
The record water of CCD displays 2 seethes with excitement the required time under different temperature condition, and its image information.
Valve 1 is opened, valve 26 is closed, air compressor machine 11 is controlled by gas pressure regulator 10 and is worked, to confined chamber 15
Interior aerating so that be in high pressure conditions in confined chamber 15；Then respectively by the control heater 4 of temperature control display 9 various
Water under state of temperature plus in hot water tank 3, and by CCD camera 1, the record water of CCD displays 2 under different temperature condition
Time needed for boiling, and its image information.
Valve 1 is closed, valve 26 is opened, vavuum pump 7 is controlled by gas pressure regulator 10 and is worked, into confined chamber 15
Pumping so that be in negative pressure (i.e. low pressure) state in confined chamber 15；Then respectively by the control heater 4 of temperature control display 9
Water under various temperature state plus in hot water tank 3, and water is recorded in different temperatures by CCD camera 1, CCD displays 2
Seethe with excitement under state the required time, and its image information.
By above-mentioned experimentation, different air pressure can be clearly observed, the time that water is reached needed for boiling point is also different, from
And it is more readily apparent from impact of the air pressure to the boiling point of water.
Claims (1)
1. a kind of boiling point is affected experiment device for teaching with regard to air pressure, it is characterised in that including confined chamber (15),
Water receptacle (3) is placed with confined chamber (15), and for adding the heater (4) of hot water tank (3)；
Air compressor machine (11), gas pressure regulator (10) and the vavuum pump (7) being sequentially connected, and air compressor machine are provided with outside confined chamber (15)
(11), gas pressure regulator (10) and vavuum pump (7) are also connected with confined chamber (15) respectively；
CCD camera (1) and CCD displays (2) are additionally provided with outside confined chamber (15), CCD camera (1) is fixed on confined chamber
(15) outward, the boiling point modified-image of water in water receptacle (3) is gathered, and CCD camera (1) is connected with CCD displays (2)；
Described confined chamber (15) passes through respectively upper cover plate (16) and lower cover using cylindric glass tube in upper and lower ends
(13) it is sealed to form；It is connected by sealing screw rod (14) between upper cover plate (16) and lower cover (13), while in confined chamber
(15) seal member (5) is provided with and upper cover plate (16), confined chamber (15) and lower cover (13) between；
Also include the air gauge (17) in insertion confined chamber (15)；
The safety valve (8) being connected with confined chamber (15) is additionally provided with outside described confined chamber (15)；
It is additionally provided with valve one (12) on described air compressor machine (11) and the connecting line of confined chamber (15), vavuum pump (7) and close
Valve two (6) is additionally provided with the connecting line of closed chamber (15)；
Temperature control display (9), temperature control display (9) and confined chamber (15) are additionally provided with outside described confined chamber (15)
Interior heater (4) is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510060868.5A CN104680895B (en) | 2015-02-05 | 2015-02-05 | Teaching experimental device about influence of air pressure on boiling point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510060868.5A CN104680895B (en) | 2015-02-05 | 2015-02-05 | Teaching experimental device about influence of air pressure on boiling point |
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| Publication Number | Publication Date |
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| CN104680895A CN104680895A (en) | 2015-06-03 |
| CN104680895B true CN104680895B (en) | 2017-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510060868.5A Active CN104680895B (en) | 2015-02-05 | 2015-02-05 | Teaching experimental device about influence of air pressure on boiling point |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110232851B (en) * | 2019-05-15 | 2021-04-13 | 浙江商业职业技术学院 | Boiling experiment mechanism |
| CN112967578A (en) * | 2021-01-29 | 2021-06-15 | 重庆医药高等专科学校 | Visual safety test control method |
| CN112951052A (en) * | 2021-01-29 | 2021-06-11 | 重庆医药高等专科学校 | Colleges and universities experiment display device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008090243A (en) * | 2006-09-29 | 2008-04-17 | Tokyo Electric Power Co Inc:The | Demonstration device and demonstration method of heat pump operating principle |
| CN201126654Y (en) * | 2007-12-10 | 2008-10-01 | 王超伦 | Teaching appliances for demonstrating relation of boiling point and pressure intensity |
| US7597559B2 (en) * | 2006-12-29 | 2009-10-06 | Alexander Shkolnik | Method of imitating a natural geyser and a device for carrying out the method |
| CN201955970U (en) * | 2011-03-30 | 2011-08-31 | 湖州师范学院 | Device for demonstrating relationship between boiling points and pressures of liquids |
| CN103730045A (en) * | 2014-01-20 | 2014-04-16 | 西南大学 | Comprehensive demonstration instrument for studying gas discharge phenomenon and air pressure influence on liquid boiling points |
| CN204537566U (en) * | 2015-02-05 | 2015-08-05 | 四川科业教学仪器设备有限责任公司 | A kind of experiment device for teaching boiling point affected about air pressure |
-
2015
- 2015-02-05 CN CN201510060868.5A patent/CN104680895B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008090243A (en) * | 2006-09-29 | 2008-04-17 | Tokyo Electric Power Co Inc:The | Demonstration device and demonstration method of heat pump operating principle |
| US7597559B2 (en) * | 2006-12-29 | 2009-10-06 | Alexander Shkolnik | Method of imitating a natural geyser and a device for carrying out the method |
| CN201126654Y (en) * | 2007-12-10 | 2008-10-01 | 王超伦 | Teaching appliances for demonstrating relation of boiling point and pressure intensity |
| CN201955970U (en) * | 2011-03-30 | 2011-08-31 | 湖州师范学院 | Device for demonstrating relationship between boiling points and pressures of liquids |
| CN103730045A (en) * | 2014-01-20 | 2014-04-16 | 西南大学 | Comprehensive demonstration instrument for studying gas discharge phenomenon and air pressure influence on liquid boiling points |
| CN204537566U (en) * | 2015-02-05 | 2015-08-05 | 四川科业教学仪器设备有限责任公司 | A kind of experiment device for teaching boiling point affected about air pressure |
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| CN104680895A (en) | 2015-06-03 |
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