CN101699538A - Combined liquid internal pressure and density demonstrator - Google Patents
Combined liquid internal pressure and density demonstrator Download PDFInfo
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- CN101699538A CN101699538A CN200910212261A CN200910212261A CN101699538A CN 101699538 A CN101699538 A CN 101699538A CN 200910212261 A CN200910212261 A CN 200910212261A CN 200910212261 A CN200910212261 A CN 200910212261A CN 101699538 A CN101699538 A CN 101699538A
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Abstract
The invention discloses a combined liquid internal pressure and density demonstrator, belonging to demonstration equipment for teaching. The demonstrator comprises two units which are arranged at left and right, wherein each unit comprises a three-way transparent straight pipe (1), a three-way transparent U-shaped pipe (2), a transparent cylinder (3), a transparent base (4) and an elastic membrane (5), wherein the transparent cylinder (3) is fixed on the transparent base (4); the bottom of the transparent base (4) is communicated with the three-way transparent U-shaped pipe (2) through a transparent pipeline; the three-way transparent straight pipe (1) is also arranged between the transparent base (4) and the three-way transparent U-shaped pipe (2); the elastic membrane (5) with sealing edges is arranged in the transparent cylinder (3); and piston switches are arranged on the three-way transparent straight pipe (1) and the three-way transparent U-shaped pipe (2). The invention can complete the demonstration of experiments, such as relation between pressure and height of a liquid column, relation between pressure and density, and the like, has simple structure and convenient installation, is suitable for industrial production, and can be popularized easily.
Description
Technical field
The present invention relates to the teaching demonstration apparatus, what be specifically related to is a kind of combined liquid pressure and density demonstrator.
Background technology
Continuous development along with China's educational undertaking, increasing teaching demonstration instrument is applied to and helps student's study in the actual classroom and understand the textbook content, especially need experimentize at some and deepen the subject of student the impression of notion, the liquid internal pressure of discussion and fluid density are arranged in the junior physics course as compulsory education often, the relation of gravity and liquid-column height, owing to still there is not special demonstration instrument at present, normally need with assembling temporarily more then, exist setup time long, carry shortcomings such as inconvenience, and generally all there is trueness error in the demonstrator of interim assembling, because these errors exist, also there is deviation in the test figure that demonstration draws, perhaps its DeGrain is unfavorable for student's understanding and study.
Summary of the invention
The objective of the invention is to solve above-mentioned deficiency, a kind of a kind of combined liquid internal pressure and density demonstrator that is specifically designed to the relation between demonstration liquid internal pressure and density, gravity and the liquid-column height is provided.
For solving above-mentioned technical matters, the present invention by the following technical solutions:
Combined liquid internal pressure of the present invention and density demonstrator, comprise the transparent U-shaped pipe of threeway transparent straight pipe and threeway, this demonstrator is arranged about by two unit, each unit comprises a threeway transparent straight pipe, a transparent U-shaped pipe of threeway, a transparent cylinder, a transparent base, an elastic membrane, wherein transparent cylinder is fixed on the transparent base, the transparent base bottom is connected by the transparent U-shaped pipe of transparent pipeline and threeway, and also is provided with the threeway transparent straight pipe between transparent base and the transparent U-shaped pipe of threeway; The elastic membrane that the band edge sealing is arranged in the transparent cylinder; On the transparent U-shaped pipe of threeway transparent straight pipe and threeway piston switch is arranged, the closure piston switch can stop the outer gas of threeway transparent tube to enter.
Further technical scheme is: the transparent cylinder in described each unit equates with the diameter of section of transparent base, transparent cylinder is fixed on the transparent base by the screw thread of its inside surface, and the screw thread that matches with the transparent cylinder inside surface is arranged on the transparent base.
Further technical scheme is: the diameter of section of the transparent cylinder of one of them unit is bigger than the diameter of section of the transparent cylinder of another one unit in described two unit, and the diameter of section of transparent base is bigger than the diameter of section of the transparent base of another one unit.
Further technical scheme is: described threeway transparent straight pipe, the transparent U-shaped pipe of threeway, transparent cylinder and transparent base are that organic glass is processed into.
The present invention is all right: described transparent cylinder outside surface is provided with scale.
Compared with prior art, the invention has the beneficial effects as follows: whole demonstrator is for being exclusively used in the demonstration of experiments such as liquid pressure and density and gravity, utilize the characteristic of liquid gravity and pressure, in the transparent U-shaped pipe of the threeway of two unit, add liquid, make the liquid level in the transparent U-shaped pipe of threeway of two unit contour, because the diameter of section difference of the transparent cylinder of two unit, open the piston switch on the transparent U-shaped pipe of threeway transparent straight pipe and threeway, two unit transparent cylinder in all add identical liquid, can observe and draw the relation of pressure and gravity, utilize said method, combined liquid internal pressure of the present invention and density demonstrator also can be finished the demonstration of experiments such as the relation of pressure and liquid-column height and the relation of pressure and density, and simple in structure, easy for installation, be suitable for suitability for industrialized production, be easy to promote.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Embodiment
The present invention is further elaborated below in conjunction with accompanying drawing.
As shown in Figure 1, combined liquid internal pressure of the present invention and density demonstrator, by arranging about two unit, each unit comprises a threeway transparent straight pipe 1, the transparent U-shaped pipe 2 of threeway, a transparent cylinder 3, a transparent base 4, an elastic membrane 5, wherein each unit comprises the threeway transparent straight pipe of being processed into organic glass 1, the transparent U-shaped pipe 2 of threeway, transparent cylinder 3 and transparent base 4, transparent cylinder 3 is provided with scale, and be fixed on the transparent base 4 by the screw thread of its inside surface, the screw thread that matches with transparent cylinder 3 inside surfaces is arranged on the transparent base 4, also be provided with piston switch on threeway transparent straight pipe 1 and the transparent U-shaped pipe 2 of threeway, transparent base 4 bottoms are connected by the transparent U-shaped pipe 2 of transparent pipeline and threeway, and also are provided with threeway transparent straight pipe 1 between transparent base 4 and the transparent U-shaped pipe 2 of threeway; The elastic membrane 5 that the band edge sealing is arranged in the transparent cylinder 3; The diameter of section of the transparent cylinder 3 of one of them unit is bigger than the diameter of section of the transparent cylinder 3 of another one unit, and the diameter of section of transparent base 4 is bigger than the diameter of section of the transparent base 4 of another one unit.
Carry out the experimental demonstration that concerns of liquid internal pressure and gravity, open the threeway transparent straight pipe 1 of two unit and the piston switch on the transparent U-shaped pipe 2 of threeway earlier, in the transparent U-shaped pipe 2 of threeway, add an amount of liquid with funnel and rubber hose, make the liquid level in the transparent U-shaped pipe 2 of threeway of two unit contour, close the threeway transparent straight pipe 1 of two unit and the piston switch on the transparent U-shaped pipe 2 of threeway then, because the transparent cylinder 3 of two unit is different with the diameter of section of transparent base 4, the liquid of the same race that in the transparent cylinder 3 of two unit, adds equal height, elastic membrane between cylinder and base is to recessed, make the gas compression in the transparent base 4, because the bottom of transparent base 4 is connected by the transparent U-shaped pipe 2 of transparent pipeline and threeway, and then make gases compression in the transparent U-shaped pipe of threeway 2, at this time observe the relation that liquid level in the transparent U-shaped pipe 2 of threeway of two unit just can draw pressure and gravity.
As shown in Figure 1, combined liquid internal pressure of the present invention and density demonstrator, form identical with embodiment 1, utilize it to carry out the experimental demonstration that concerns of liquid internal pressure and density, open the threeway transparent straight pipe 1 of two unit and the piston switch on the transparent U-shaped pipe 2 of threeway earlier, in the transparent U-shaped pipe 2 of threeway, add an amount of liquid with funnel and rubber hose, make the liquid level in the transparent U-shaped pipe 2 of threeway of two unit contour, close the threeway transparent straight pipe 1 of two unit and the piston switch on the transparent U-shaped pipe 2 of threeway then, because the transparent cylinder 3 of two unit is different with the diameter of section of transparent base 4, in the transparent cylinder 3 of two unit, add the non-of the same race of equal height and liquid that density is different, elastic membrane between cylinder and base is to recessed, make the gas compression in the transparent base 4, because the bottom of transparent base 4 is connected by the transparent U-shaped pipe 2 of transparent pipeline and threeway, and then make gases compression in the transparent U-shaped pipe of threeway 2, at this time observe the relation that liquid level in the transparent U-shaped pipe 2 of threeway of two unit just can draw pressure and density.
As shown in Figure 1, combined liquid internal pressure of the present invention and density demonstrator, form identical with embodiment 1, utilize it to carry out the experimental demonstration that concerns of liquid internal pressure and density, open the threeway transparent straight pipe 1 of two unit and the piston switch on the transparent U-shaped pipe 2 of threeway earlier, in the transparent U-shaped pipe 2 of threeway, add an amount of liquid with funnel and rubber hose, make the liquid level in the transparent U-shaped pipe 2 of threeway of two unit contour, close the threeway transparent straight pipe 1 of two unit and the piston switch on the transparent U-shaped pipe 2 of threeway then, because the transparent cylinder 3 of two unit is different with the diameter of section of transparent base 4, in the transparent cylinder 3 of two unit, add the non-of the same race of differing heights and liquid that density is different, elastic membrane between cylinder and base is to recessed, make the gas compression in the transparent base 4, because the bottom of transparent base 4 is connected by the transparent U-shaped pipe 2 of transparent pipeline and threeway, and then make gases compression in the transparent U-shaped pipe of threeway 2, at this time observe the relation that liquid level in the transparent U-shaped pipe 2 of threeway of two unit just can draw pressure and liquid-column height.
Claims (5)
1. combined liquid internal pressure and density demonstrator, comprise threeway transparent straight pipe (1) and the transparent U-shaped pipe of threeway (2), it is characterized in that: this demonstrator is arranged about by two unit, each unit comprises a threeway transparent straight pipe (1), a transparent U-shaped pipe of threeway (2), a transparent cylinder (3), a transparent base (4), an elastic membrane (5), wherein transparent cylinder (3) is fixed on the transparent base (4), transparent base (4) bottom is connected by the transparent U-shaped pipe of transparent pipeline and threeway (2), also be provided with threeway transparent straight pipe (1) between the transparent U-shaped pipe of transparent base (4) and threeway (2), the elastic membrane (5) that the band edge sealing is arranged in the transparent cylinder (3) has piston switch on threeway transparent straight pipe (1) and the transparent U-shaped pipe of threeway (2).
2. combined liquid internal pressure as claimed in claim 1 and density demonstrator, it is characterized in that: the transparent cylinder (3) in described each unit equates with the diameter of section of transparent base (4), transparent cylinder (3) is fixed on the transparent base (4) by the screw thread of its inside surface, and the screw thread that matches with transparent cylinder (3) inside surface is arranged on the transparent base (4).
3. combined liquid internal pressure as claimed in claim 2 and density demonstrator, it is characterized in that: the diameter of section of the transparent cylinder (3) of one of them unit is bigger than the diameter of section of the transparent cylinder (3) of another one unit in described two unit, and the diameter of section of transparent base (4) is bigger than the diameter of another one unit.
4. as claim 1 to 3 described combined liquid internal pressure of any claim and density demonstrator, it is characterized in that: described threeway transparent straight pipe (1), the transparent U-shaped pipe of threeway (2), transparent cylinder (3) are organic glass with the material of transparent base (4).
5. as claim 1 to 3 described combined liquid internal pressure of any claim and density demonstrator, it is characterized in that: described transparent cylinder (3) outside surface is provided with scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102122619A CN101699538B (en) | 2009-11-06 | 2009-11-06 | Combined liquid internal pressure and density demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102122619A CN101699538B (en) | 2009-11-06 | 2009-11-06 | Combined liquid internal pressure and density demonstrator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101699538A true CN101699538A (en) | 2010-04-28 |
| CN101699538B CN101699538B (en) | 2011-09-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102122619A Expired - Fee Related CN101699538B (en) | 2009-11-06 | 2009-11-06 | Combined liquid internal pressure and density demonstrator |
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| Country | Link |
|---|---|
| CN (1) | CN101699538B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103531066A (en) * | 2013-11-01 | 2014-01-22 | 苏州市凯业金属制品有限公司 | Anti-backflow three-way pipe for teaching experiment |
| CN103544870A (en) * | 2013-10-12 | 2014-01-29 | 李倬 | Liquid pressure demonstration instrument |
-
2009
- 2009-11-06 CN CN2009102122619A patent/CN101699538B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103544870A (en) * | 2013-10-12 | 2014-01-29 | 李倬 | Liquid pressure demonstration instrument |
| CN103544870B (en) * | 2013-10-12 | 2016-04-13 | 李倬 | Liquid pressure demonstration instrument |
| CN103531066A (en) * | 2013-11-01 | 2014-01-22 | 苏州市凯业金属制品有限公司 | Anti-backflow three-way pipe for teaching experiment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101699538B (en) | 2011-09-07 |
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Granted publication date: 20110907 Termination date: 20131106 |