CN102831804B - Tester for air intermolecular acting force - Google Patents
Tester for air intermolecular acting force Download PDFInfo
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- CN102831804B CN102831804B CN201210338007.5A CN201210338007A CN102831804B CN 102831804 B CN102831804 B CN 102831804B CN 201210338007 A CN201210338007 A CN 201210338007A CN 102831804 B CN102831804 B CN 102831804B
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- cylindrical drum
- acting force
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- air molecule
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Abstract
The invention discloses a tester for air intermolecular acting force, which comprises a cylinder, a compression device, a balloon, an injector and a pressure intensity sensor, wherein the middle lower part of the cylinder is provided with an object placement plate; the balloon is arranged on the object placement plate; the air inlet of the balloon is connected with one end of an air tap; the other end of the air tap is connected with a gas tube; the compression device comprises a compression bar, a handle and a lower platen, wherein the handle is positioned at the top of the compression bar; the lower platen is positioned at the bottom of the compression bar; the lower platen is arranged in the cylinder; the outer circumstance of the lower platen is contacted with the inner wall of the cylinder; and the lower platen is driven by the compression bar by pulling the handle vertically to slide in the cylinder vertically. According to the tester for the air intermolecular acting force, the intermolecular acting force is tested in a balloon extrusion mode, frictional force interference is omitted, and the measurement precision is improved, thereby bringing convenience for students to carry out a group experiment.
Description
Technical field
The present invention relates to a kind of experiment equipment, in particular, relate to the tester of acting force between a kind of air molecule.
Background technology
Intermolecular acting force is the key content in teaching, acting force between gas molecule utilizes conventional instrument to be difficult for measuring, student also cannot experience the gas of certain mass compressed after, the size of its pressure or pressure, explanation that cannot be vivid in teaching process, inconvenient student's understanding, brings very large difficulty to teaching process.
Summary of the invention
Technical matters to be solved by this invention is, overcomes the shortcoming of prior art, a kind of teacher's of being convenient to demonstration is provided, facilitates the tester of acting force between the air molecule that student understands.
In order to solve above technical matters, the invention provides the tester of acting force between a kind of air molecule, comprise cylindrical drum, compression set, balloon, syringe and pressure transducer; Be provided with a shelf in described cylindrical drum middle and lower part, described balloon is positioned on described shelf, and its air intake opening connects one end of a valve, and the other end of described valve connects a gas-filled tube; Described compression set comprises depression bar, be positioned at the handle and the lower platen that is positioned at depression bar bottom at depression bar top, described lower platen is arranged in described cylindrical drum, its excircle contacts with cylindrical drum inwall, by pulling up and down handle to make described depression bar drive described lower platen to slide up and down in described cylindrical drum;
When tester is during in inflated condition, described gas-filled tube connects syringe, in order to give described balloon inflation; When tester is during in experimental state, described gas-filled tube connects pressure transducer, in order to carry out acting force experiment between air molecule.
Being further defined to of technical solution of the present invention, described shelf diameter is less than described cylindrical drum bottom surface diameter, between itself and cylindrical drum inwall, has gap, described gas-filled tube from the gap between shelf and cylindrical drum inwall by being connected with described valve.
Further, on described shelf, offer perforation, described valve is through described perforation, and its one end is positioned at described shelf top, and the other end is positioned at described shelf below.
Further, the air intake opening of described balloon and described valve junction are fastening by O-ring seals, make to be connected between balloon and valve more firm.
Further, also comprise connecting pipe, described gas-filled tube is sebific duct, and described connecting pipe one end is connected with described sebific duct, and the other end is connected with described syringe or described pressure transducer, is convenient to the assembling of tester.
Further, described tester also comprises at least two gusset plates, described gusset plate is fixed on described cylindrical drum bottom, described shelf is fixed on described gusset plate top, adopt the mode of gusset plate to be convenient to the fixing of shelf, and gusset plate and shelf, cylindrical drum material are identical or close, make tester visual effect attractive in appearance.
Further, compression set also comprises firm plate, and described firm plate is fixed on described depression bar, and be positioned at cylindrical drum more than lower platen, described firm plate excircle contacts with cylindrical drum inwall, adopts firm plate, make piston in sliding process, keep balance, simply effective.
Further, described cylindrical drum is the acrylic cylindrical drum of 5mm wall thickness.
Further, the volume of described syringe is 50ml
The invention has the beneficial effects as follows: the tester of acting force between a kind of air molecule of the present invention, adopt the mode of balloon extruding to test intermolecular acting force, the interference of zerofriction force, improves measuring accuracy; And tester is simple in structure, be convenient to processing and fabricating, easy to assembly, be convenient to student experiment in group.
Accompanying drawing explanation
Fig. 1 is the structural representation of the tester of acting force between a kind of air molecule described in embodiment 1;
Fig. 2 is the structural representation of the tester of acting force between a kind of air molecule described in embodiment 1;
Fig. 3 is the time m-gas pressure intensity curve map that experimentation Computer processor of the present invention is drawn.
In figure:
1, cylindrical drum; 2, compression set; 3, handle; 4, firm plate; 5, lower platen;
6, gusset plate; 7, balloon; 8, valve; 9, gas-filled tube; 10, connecting pipe; 11, shelf.
Embodiment
embodiment 1
The tester of acting force between a kind of air molecule that the present embodiment provides, its structural representation as shown in Figure 1, comprises cylindrical drum 1, compression set 2, balloon 7, syringe and pressure transducer.
Cylindrical drum 1 is the plexi-glass tubular of 5mm wall thickness, and the bottom of cylindrical drum 1 arranges on 6, two gusset plates 6 of two gusset plates and is fixedly installed a shelf 11.Balloon 7 is positioned on shelf 11, and its air intake opening connects one end of a valve 8, and its junction is fastening by O-ring seals; The other end of valve 8 connects a gas-filled tube 9, and described gas-filled tube 9 is sebific duct, and the other end of described gas-filled tube 9 is connected with connecting pipe 10.When tester is during in inflated condition, connecting pipe 10 connects the syringe of 50ml, in order to inflate to described balloon 7; When tester is during in experimental state, connecting pipe 10 connects pressure transducer, in order to carry out acting force experiment between air molecule.
Compression set 2 comprises depression bar, be positioned at the handle 3 and the lower platen 5 that is positioned at depression bar bottom at depression bar top, lower platen 5 is arranged in cylindrical drum 1, and its excircle contacts with cylindrical drum 1 inwall, by pulling up and down handle 3 to make depression bar drive lower platen 5 to slide up and down in cylindrical drum 1.In addition, compression set 2 also comprises firm plate 4, and firm plate 4 is fixed on described depression bar, and is positioned at more than 5 cylindrical drum 1 of lower platen, and its excircle contacts with cylindrical drum 1 inwall,, adopt firm plate 4, make piston in sliding process, keep balance, simply effective.
The experiment equipment when tester of acting force uses between air molecule of the present invention comprises computing machine, data acquisition unit, the tester of acting force between data line and air molecule.
The annexation of above-mentioned experiment equipment is: between pressure transducer and air molecule, the balloon 7 of the tester of acting force is connected, guarantee air tight, the pressure values when detecting balloon 7 internal volumes and changing.Data acquisition unit one end is connected with pressure transducer, the other end is connected with computer processor, data acquisition unit gathers the pressure in pressure transducer, and pressure is sent to computer processor processes, computer processor receives pressure data and stores and process, and generates curve map intuitively.
Between a kind of air molecule described in the present embodiment, the method for work of the tester of acting force is carried out as follows:
(1) put up experimental provision, in balloon 7, be filled with after a certain amount of gas with syringe, connect into pressure transducer;
(2) open computer processor, set up " pressure-time " coordinate relation, select suitable experimental period and acquisition interval;
(3) click START button, slowly toward pressing down compression set 2, pressure transducer gathers the pressure of balloon interior by the time interval, be sent to computer processor by data acquisition unit, finishes until gather;
(4) data that computer processor processing receives, set up " pressure-time " curve map as shown in Figure 3, and in observation baloon, the change curve of certain mass gas pressure intensity, carries out data analysis.
embodiment 2
The tester of acting force between a kind of air molecule that the present embodiment provides, its structural representation as shown in Figure 2, its parts are identical with embodiment 1 with main annexation, difference is, shelf 11 diameters are less than cylindrical drum 1 bottom surface diameter, between itself and cylindrical drum 1 inwall, there is gap, gas-filled tube 9 from the gap between shelf 11 and cylindrical drum 1 inwall by being connected with described valve (8).
Its experimental technique is identical with embodiment 1, and the experimental data obtaining is identical with embodiment 1.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (9)
1. a tester for acting force between air molecule, is characterized in that: comprise cylindrical drum (1), compression set (2), balloon (7), syringe and pressure transducer; Be provided with a shelf (11) in described cylindrical drum (1) middle and lower part, it is upper that described balloon (7) is positioned over described shelf (11), and its air intake opening connects one end of a valve (8), and the other end of described valve (8) connects a gas-filled tube (9); Described compression set (2) comprises depression bar, be positioned at the handle (3) at depression bar top and be positioned at the lower platen (5) of depression bar bottom, described lower platen (5) is arranged in described cylindrical drum (1), its excircle contacts with cylindrical drum (1) inwall, by pulling up and down handle (3) to make described depression bar drive described lower platen (5) to slide up and down in described cylindrical drum (1);
When tester is during in inflated condition, described gas-filled tube (9) connects syringe, in order to give described balloon (7) inflation; When tester is during in experimental state, described gas-filled tube (9) connects pressure transducer, in order to carry out acting force experiment between air molecule.
2. the tester of acting force between a kind of air molecule according to claim 1, it is characterized in that: described shelf (11) diameter is less than described cylindrical drum (1) bottom surface diameter, between itself and cylindrical drum (1) inwall, there is gap, described gas-filled tube (9) from the gap between shelf (11) and cylindrical drum (1) inwall by being connected with described valve (8).
3. the tester of acting force between a kind of air molecule according to claim 1, it is characterized in that: described shelf offers perforation on (11), described valve (8) is through described perforation, and its one end is positioned at described shelf top, and the other end is positioned at described shelf below.
4. according to the tester of acting force between a kind of air molecule described in claim 1 or 2 or 3, it is characterized in that: the air intake opening of described balloon (7) and described valve (8) junction are fastening by O-ring seals.
5. according to the tester of acting force between a kind of air molecule described in claim 1 or 2 or 3, it is characterized in that, also comprise connecting pipe (10), described gas-filled tube (9) is sebific duct, described connecting pipe one end is connected with described sebific duct, and the other end is connected with described syringe or described pressure transducer.
6. according to the tester of acting force between a kind of air molecule described in claim 1 or 2 or 3, it is characterized in that, described tester also comprises at least two gusset plates (6), described gusset plate (6) is fixed on described cylindrical drum (1) bottom, and described shelf (11) is fixed on described gusset plate (6) top.
7. according to the tester of acting force between a kind of air molecule described in claim 1 or 2 or 3, it is characterized in that, compression set also comprises firm plate (4), described firm plate (4) is fixed on described depression bar, and be positioned at the above cylindrical drum (1) of lower platen (5), described firm plate (4) excircle contacts with cylindrical drum (1) inwall.
8. according to the tester of acting force between a kind of air molecule described in claim 1 or 2 or 3, it is characterized in that, described cylindrical drum (1) is the acrylic cylindrical drum of 5mm wall thickness.
9. according to the tester of acting force between a kind of air molecule described in claim 1 or 2 or 3, it is characterized in that, the volume of described syringe is 50ml.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210338007.5A CN102831804B (en) | 2012-09-13 | 2012-09-13 | Tester for air intermolecular acting force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210338007.5A CN102831804B (en) | 2012-09-13 | 2012-09-13 | Tester for air intermolecular acting force |
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| Publication Number | Publication Date |
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| CN102831804A CN102831804A (en) | 2012-12-19 |
| CN102831804B true CN102831804B (en) | 2014-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210338007.5A Active CN102831804B (en) | 2012-09-13 | 2012-09-13 | Tester for air intermolecular acting force |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103345868A (en) * | 2013-07-23 | 2013-10-09 | 湖州文思必得科教仪器有限公司 | Boyles law demonstration device |
| CN111968466A (en) * | 2019-12-31 | 2020-11-20 | 江苏艾迪生教育发展有限公司 | Intelligent air intermolecular acting force experimental device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3824711A (en) * | 1972-12-26 | 1974-07-23 | Xerox Corp | Educational device |
| CN1503205A (en) * | 2002-11-26 | 2004-06-09 | 尚玉香 | Boyle-Mariotte law experiment device and use method thereof |
| CN2658871Y (en) * | 2003-12-02 | 2004-11-24 | 王樂安 | Bohr law experimental apparatus |
| CN202855143U (en) * | 2012-09-13 | 2013-04-03 | 江苏苏威尔科技有限公司 | Experiment device for intermolecular forces |
-
2012
- 2012-09-13 CN CN201210338007.5A patent/CN102831804B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3824711A (en) * | 1972-12-26 | 1974-07-23 | Xerox Corp | Educational device |
| CN1503205A (en) * | 2002-11-26 | 2004-06-09 | 尚玉香 | Boyle-Mariotte law experiment device and use method thereof |
| CN2658871Y (en) * | 2003-12-02 | 2004-11-24 | 王樂安 | Bohr law experimental apparatus |
| CN202855143U (en) * | 2012-09-13 | 2013-04-03 | 江苏苏威尔科技有限公司 | Experiment device for intermolecular forces |
Non-Patent Citations (2)
| Title |
|---|
| 气体的压强与体积的关系的实验设计;陈银潭;《物理实验》;19960430(第4期);全文 * |
| 陈银潭.气体的压强与体积的关系的实验设计.《物理实验》.1996,(第4期), |
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| CN102831804A (en) | 2012-12-19 |
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Denomination of invention: Tester for air intermolecular acting force Effective date of registration: 20191216 Granted publication date: 20140709 Pledgee: Nanjing Bank Co., Ltd. Chengnan Branch Pledgor: Jiangsu SWR Science & Technology Co., Ltd. Registration number: Y2019320000363 |
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