CN205028556U - Chemical experiment teaching aid - Google Patents
Chemical experiment teaching aid Download PDFInfo
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- CN205028556U CN205028556U CN201520597446.7U CN201520597446U CN205028556U CN 205028556 U CN205028556 U CN 205028556U CN 201520597446 U CN201520597446 U CN 201520597446U CN 205028556 U CN205028556 U CN 205028556U
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- China
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- shaped pipe
- threeway
- point
- hummer
- porous carbon
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- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Fuel Cell (AREA)
Abstract
The utility model provides a hydrogen oxygen fuel cell panel formula teaching aid, includes the panel, tee bend U -shaped pipe (1), pipe (2) of taking the piston, porous carbon -point (3), emulsion tube (4), ordinary funnel (5), galvanometer (6), PCB board (7), emitting diode (8), buzzer (9), DC power supply (10), multidirectional switch (11). Arrange this teaching aid to use introducing " energy conversion among the chemical battery " time, through demonstrating 3 experiments, not only can strengthen " the constitution of water, electrolysis ", " the method of inspection of hydrogen, oxygen " the knowledge point of etc. Ing, can also let the student is directly perceived, image ground perception to fuel cell be one kind can be with the device of " the chemical energy turns into the electric energy ", the elimination student is to the doubt of " it can be supplied power " actually.
Description
Technical field
The utility model relates to a kind of chemical experiment teaching aid, and more specifically, relates to a kind of hydrogen-oxygen fuel cell panel formula teaching aid.
Background technology
" brine electrolysis " and " hydrogen-oxygen fuel cell " is the important content in senior chemistry course " chemical energy and electric energy transform mutually ".Once introducing Hydrogen Energy in junior school teaching material is green energy resource, and Conversion of Energy mode when chemical cell (comprising fuel cell) discharges, for the principle of work learning fuel cell to senior high school period further lays the foundation.
But due to fuel cell uncommon in life, student is to its lack of perceptual knowledge, add in Shanghai religion version ninth grade teaching material and be only equipped with simple character introduction, there is no schematic diagram and the experiment of fuel cell, probably make student throw doubt upon to " it outwardly can provide electricity " actually.In addition, the fuel cell experiment provided in Soviet Union's religion version Xin-Ke-Cheng Online Chemistry Teaching Material " chemistry 2 ", although device is simple, complicated operation, both lacked interest, and success ratio is low again, be more unfavorable for the principle of work of the cognitive fuel cell of student.
Utility model content
1. the technical matters that will solve
The purpose of this utility model is to provide a kind of " hydrogen-oxygen fuel cell panel formula teaching aid ", may be used for the experiment in teaching material, preferably auxiliary first, Senior Middle School Chemistry Classroom Teaching.
2. technical scheme
The purpose of this utility model can be realized by following technical scheme.
A kind of hydrogen-oxygen fuel cell panel formula teaching aid, comprises panel, threeway U-shaped pipe, the conduit of band piston, porous carbon-point, emulsion tube, common funnel, sensitive galvanometer, pcb board, light emitting diode, hummer, direct supply, multi-direction switch; Described threeway U-shaped pipe mouth of pipe footpath 3cm, length of tube 12cm, two tube pitch 5cm, at described threeway U-shaped pipe bottom frit one section of glass manifold, form three-port structure, described threeway U-shaped pipe is fixed in panel, and described threeway U-shaped pipe is furnished with two rubber stopper with double hole, load onto porous carbon-point and the conduit with piston respectively, be assembled into electrolytic cell; Described porous carbon-point is the thick diameter multi-hole carbon-point that diameter is greater than 1.5cm, and in order to enlarge active surface and gas adsorbance, thus improve strength of current, the porous carbon-point in described threeway U-shaped Guan Zuozhi is connected to one end of multi-direction switch; Described common funnel uses emulsion tube to be connected to the arm of threeway U-shaped pipe lower end, forms linker, described common funnel opening iron ring carrying, and position is higher than described threeway U-shaped pipe; Described sensitive galvanometer is arranged on above described panel, and described sensitive galvanometer one end connects the second contact of multi-direction switch, and the other end connects hummer; Described pcb board is provided with light emitting diode and hummer, described light emitting diode and hummer are connected in series, and one end that light emitting diode is not connected with hummer is connected to the 3rd contact of multi-direction switch; The negative pole of described direct supply is connected to the first contact of multi-direction switch, and the positive pole of described direct supply is connected to the porous carbon-point in right of threeway U-shaped pipe.
3. beneficial effect
Use when this teaching aid being arranged in introduction " in chemical cell energy conversion ", by demonstrating 3 experiments, not only can consolidate the knowledge point such as " composition of water, electrolysis ", " method of inspection of hydrogen, oxygen ", it is that one by the device of " chemical energy is electric energy ", can eliminate student to the doubt of " it can be powered " actually that student can also be allowed to perceive fuel cell intuitively, visually.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
In figure: the conduit of 1-threeway U-shaped pipe 1,2-band piston, 3-porous carbon-point, 4-emulsion tube, the common funnel of 5-, 6-sensitive galvanometer, 7-PCB plate, 8-light emitting diode, 9-hummer, 10-direct supply, 11-multi-direction switch.
Specific embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described.
A kind of hydrogen-oxygen fuel cell panel formula teaching aid, comprises panel, threeway U-shaped pipe 1, the conduit 2 of band piston, porous carbon-point 3, emulsion tube 4, common funnel 5, sensitive galvanometer 6, pcb board 7, light emitting diode 8, hummer 9, direct supply 10, multi-direction switch 11.
Described threeway U-shaped pipe 1 mouth of pipe footpath 3cm, length of tube 12cm, two tube pitch 5cm, at described threeway U-shaped pipe 1 bottom frit one section of glass manifold, form threeway U-shaped pipe 1, described threeway U-shaped pipe 1 is fixed in panel, and described threeway U-shaped pipe 1 is furnished with two rubber stopper with double hole, load onto porous carbon-point 3 and the conduit 2 with piston respectively, be assembled into electrolytic cell.
Described porous carbon-point 3 is thick diameter multi-hole carbon-points that diameter is greater than 1.5cm, in order to enlarge active surface and gas adsorbance, thus improves strength of current, and the porous carbon-point 3 in left of described threeway U-shaped pipe 1 is connected to one end of multi-direction switch 11.
Described common funnel 5 uses emulsion tube 4 to be connected to the arm of threeway U-shaped pipe 1 lower end, forms linker, the opening iron ring carrying of described common funnel 5, and position is higher than described threeway U-shaped pipe 1.
Described sensitive galvanometer 6 is arranged on above described panel, and described sensitive galvanometer 6 one end connects the second contact of multi-direction switch 11, and the other end connects hummer 9.
Described pcb board 7 is provided with light emitting diode 8 and hummer 9, described light emitting diode 8 is connected in series with hummer 9, and one end that light emitting diode 8 is not connected with hummer 9 is connected to the 3rd contact of multi-direction switch 11.
The negative pole of described direct supply 10 is connected to the first contact of multi-direction switch 11, and the positive pole of described direct supply 10 is connected to the porous carbon-point 3 in right of threeway U-shaped pipe 1.
Following 3 experiments can be completed by this teaching aid in middle school chemical classroom teaching:
(1) " brine electrolysis " experiment (multi-direction switch 11 connects the first contact): open supravasal piston, add saturated Na2SO4 from bell mouth to threeway U-shaped pipe 1.Solution is to threeway U-shaped pipe 1 two ends air is drained.Closure piston, stops after connecting the about 3min of direct supply 10 (16V) electrolysis.
(2) " inspection of hydrogen and oxygen " experiment: open supravasal piston, release hydrogen partial and oxygen, respectively with detonation method, combustion method inspection.
(3) " hydrogen-oxygen fuel cell " experiment: be connected with pcb board 7 (multi-direction switch 11 connects the 3rd contact), sensitive galvanometer (multi-direction switch 11 connects the second contact) by the carbon-point at threeway U-shaped pipe 1 two ends respectively with wire, can observe the phenomenon of light emitting diode 8 luminescence (continuing 1min many), hummer 9 ring (continuing 8min many), sensitive galvanometer 6 needle deflection.
Use when this teaching aid being arranged in introduction " in chemical cell energy conversion ", by demonstrating 3 experiments, not only can consolidate the knowledge point such as " composition of water, electrolysis ", " method of inspection of hydrogen, oxygen ", it is that one by the device of " chemical energy is electric energy ", can eliminate student to the doubt of " it can be powered " actually that student can also be allowed to perceive fuel cell intuitively, visually.Meanwhile, the interest of the further learning chemistry of student, research principle is also excited with the novelty of this experiment, interest.
Under design disclosed in the utility model, one of ordinary skill in the art can adjust described equipment according to actual needs, but these adjustment will drop within claims of the present utility model.
Claims (3)
1. a chemical experiment teaching aid, is characterized in that, comprises panel, threeway U-shaped pipe (1), the conduit (2) of band piston, porous carbon-point (3), emulsion tube (4), common funnel (5), sensitive galvanometer (6), pcb board (7), light emitting diode (8), hummer (9), direct supply (10), multi-direction switch (11);
Described threeway U-shaped pipe (1), the conduit (2) of band piston, porous carbon-point (3), emulsion tube (4), common funnel (5), sensitive galvanometer (6), pcb board (7), light emitting diode (8), hummer (9), direct supply (10), multi-direction switch (11) is all fixed in panel
At described threeway U-shaped pipe (1) bottom frit one section of glass manifold, form three-port structure, described threeway U-shaped pipe (1) is furnished with two rubber stopper with double hole, load onto porous carbon-point (3) and the conduit (2) with piston respectively, be assembled into electrolytic cell, the porous carbon-point (3) of described threeway U-shaped pipe (1) Zuo Zhizhong is connected to one end of multi-direction switch (11);
Described common funnel (5) uses emulsion tube (4) to be connected to the arm of threeway U-shaped pipe (1) lower end, forms linker, and described common funnel (5) carries with opening iron ring, and position is higher than described threeway U-shaped pipe (1);
Described sensitive galvanometer (6) is arranged on above described panel, and described sensitive galvanometer (6) one end connects the second contact of multi-direction switch (11), and the other end connects hummer (9);
Described pcb board (7) is provided with light emitting diode (8) and hummer (9), described light emitting diode (8) and hummer (9) are connected in series, and one end that light emitting diode (8) is not connected with hummer (9) is connected to the 3rd contact of multi-direction switch (11);
The negative pole of described direct supply (10) is connected to the first contact of multi-direction switch (11), and the positive pole of described direct supply (10) is connected to the porous carbon-point (3) in right of threeway U-shaped pipe (1).
2. a kind of chemical experiment teaching aid according to claim 1, is characterized in that, described threeway U-shaped pipe (1) mouth of pipe footpath 3cm, length of tube 12cm, two tube pitch 5cm.
3. a kind of chemical experiment teaching aid according to claim 1, is characterized in that, described porous carbon-point (3) is that diameter is greater than 1.5cm in order to enlarge active surface and gas adsorbance, thus improves the thick diameter multi-hole carbon-point of strength of current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520597446.7U CN205028556U (en) | 2015-08-09 | 2015-08-09 | Chemical experiment teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520597446.7U CN205028556U (en) | 2015-08-09 | 2015-08-09 | Chemical experiment teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205028556U true CN205028556U (en) | 2016-02-10 |
Family
ID=55261072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520597446.7U Expired - Fee Related CN205028556U (en) | 2015-08-09 | 2015-08-09 | Chemical experiment teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205028556U (en) |
-
2015
- 2015-08-09 CN CN201520597446.7U patent/CN205028556U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160210 Termination date: 20160809 |
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| CF01 | Termination of patent right due to non-payment of annual fee |