CN202650355U - Boyle law demonstrator with pressure gage - Google Patents
Boyle law demonstrator with pressure gage Download PDFInfo
- Publication number
- CN202650355U CN202650355U CN 201220339444 CN201220339444U CN202650355U CN 202650355 U CN202650355 U CN 202650355U CN 201220339444 CN201220339444 CN 201220339444 CN 201220339444 U CN201220339444 U CN 201220339444U CN 202650355 U CN202650355 U CN 202650355U
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- hydraulic pressure
- pressure chamber
- air
- air storage
- storage post
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- 238000003860 storage Methods 0.000 claims abstract description 28
- 238000012360 testing method Methods 0.000 claims abstract description 12
- 230000006698 induction Effects 0.000 claims description 11
- 239000012780 transparent material Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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Abstract
The utility model discloses a Boyle law demonstrator with a pressure gage. The Boyle law demonstrator comprises a base which is provided with a pressure transmission display system and a gas volume test system. The pressure transmission display system comprises a hydraulic pressure chamber, a pointer pressure gage, a safety valve and an air-intake duct. The pointer pressure gage and the safety valve are disposed on top of the hydraulic pressure chamber. An inner end mouth of the air-intake duct is disposed on an upper part of the hydraulic pressure chamber. The air-intake duct is provided with an inlet valve which is disposed outside the hydraulic pressure chamber. A lower part of the hydraulic pressure chamber is communicated with the gas volume test system. The gas volume test system comprises a gas storage column, an inlet/outlet pipe, and a scale plate. The inlet/outlet pipe is connected with a lower part of the gas storage column, and is provided with an inlet/outlet valve. The scale plate is disposed on a side of the gas storage column. A lower part of the gas storage column is connected with an end of a connecting pipe. The Boyle law demonstrator has reasonable design, simple structure, good specificity, and small experimental errors. The Boyle law demonstrator has very good visibility, fully improves teaching effect, has good practicality, and is easy to popularize and apply.
Description
Technical field
The utility model relates to a kind of instruments used for education, particularly a kind ofly is with manometric Boyle law demonstration device.
Background technology
Take as an elective course in the 3-3 volume at newly organized regular senior secondary school curricular standard experiment textbook " physics ", when lecturing " Bo Yier law ", need to probe into lecture experiment.
Probing into the Bo Yier law is the senior middle school physics teaching content, still, never has since the establishment of the nation instrumentation, in the outfit instruments used for education catalogue before the Ministry of Education, adopts " gas law demonstration device " to do experiment.Because " gas law demonstration device " specificity is not strong, experimental error is larger, and visibility is not high, has a strong impact on teaching efficiency.When the Ministry of Education in 2010 promulgates new regular senior secondary school science teaching apparatus preparation standard, increased Bo Yier law demonstration device project newly.This teaching instrumentation is the domestic approved product that there is no at present.
The utility model content
The utility model is in order to solve weak point of the prior art, provides that a kind of experimental precision is high, visibility strong, helps to promote the Boyle law demonstration device of teaching efficiency.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: manometric Boyle law demonstration device, comprise base, base is provided with pressure and transmits display system and gas volume testing system, described pressure transmits display system and comprises hydraulic pressure chamber, pointer tensimeter, safety valve and air induction conduit, pointer tensimeter and safety valve are located at the hydraulic pressure chamber top, the inner mouth of pipe of air induction conduit is positioned at the hydraulic pressure chamber internal upper part, air induction conduit is provided with the gas admittance valve that is positioned at the hydraulic pressure chamber outside, and the hydraulic pressure chamber bottom is communicated with the gas volume test macro by connecting pipe.
Described gas volume test macro comprises air storage post, intake-discharge pipe and scaleplate, and intake-discharge pipe is connected with the bottom of air storage post, and intake-discharge pipe is provided with water-inflow and drain valve, and scaleplate is located at air storage post sidepiece, and air storage post bottom is connected with an end of connecting pipe; Described hydraulic pressure chamber and air storage post are all made by transparent material.
Adopt technique scheme, when demonstrate in the classroom, open first water-inflow and drain valve, in the air storage post and by connecting pipe, in hydraulic pressure chamber, be filled with a certain amount of water, then close water-inflow and drain valve, then open gas admittance valve, by air induction conduit charged pressure gas in the hydraulic pressure chamber, pressed gas is pressed into the water in the hydraulic pressure chamber in the air storage post by connecting pipe, and tensimeter demonstrates pressure value, pressure is larger, and the volume of the air column on air storage post top is less.Thereby certain gas of demonstration certain mass, in the situation that temperature-resistant, pressure P and volume V are inversely proportional to.Do lecture experiment with the utility model, get arbitrarily 10 groups of data and calculate, average error is less than 1.0%.After demonstration finishes, open water-inflow and drain valve, the water discharge is got final product.Safety valve plays the effect of avoiding the excessive damage parts of pressure.
The utility model is reasonable in design, simple in structure, and specificity is strong, and experimental error is little, and has extremely strong visibility, has fully improved teaching efficiency, and is practical, is easy to apply.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, of the present utility modelly be with manometric Boyle law demonstration device, comprise base 1, base 1 is provided with pressure and transmits display system and gas volume testing system, pressure transmits display system and comprises hydraulic pressure chamber 2, pointer tensimeter 3, safety valve 4 and air induction conduit 5, pointer tensimeter 3 and safety valve 4 are located at hydraulic pressure chamber 2 tops, and the inner mouth of pipe of air induction conduit 5 is positioned at hydraulic pressure chamber 2 internal upper parts, and air induction conduit 5 is provided with the gas admittance valve 6 that is positioned at hydraulic pressure chamber 2 outsides.
The gas volume test macro comprises air storage post 7, intake-discharge pipe 8 and scaleplate 9, intake-discharge pipe 8 is connected with the bottom of air storage post 7, intake-discharge pipe 8 is provided with water-inflow and drain valve 10, and scaleplate 9 is located at air storage post 7 sidepieces, and air storage post 7 bottoms are communicated with by a joint connecting pipe 11 hydraulic pressure chambers 2 bottoms.
Air storage post 7 transparent material manufacturing, significant height is not less than 400mm, and wall thickness is not less than 3mm; Visibility is higher, and gas volume changes test accurately.
Scaleplate 9 is close to air storage post 7 both sides, changes calibration 100 five equilibriums by gas volume scale is set from top to bottom, and per 10 five equilibriums indicate numerical value, reads conveniently calculating simplicity.
The hydraulic pressure transfer mode is adopted in the pressure transmission, and the air storage post that has overcome existing " gas law demonstration device " is shorter, uses piston pressurization, and frictional heat affects gas temperature to be changed, and causes the larger defective of experimental error.Hydraulic pressure chamber 2 of the present utility model is used liquid pressing by the transparent material manufacturing, and the pressure transmittance process is high-visible, and control is steady, and value is accurate.
When demonstrate in the classroom, open first water-inflow and drain valve 10, in air storage post 7 and by connecting pipe 11, in hydraulic pressure chamber 2, be filled with a certain amount of water 12 by intake-discharge pipe 8, then close water-inflow and drain valve 10, then open gas admittance valve 6, by air induction conduit 5 to hydraulic pressure chamber 2 interior charged pressure gases, pressed gas is pressed into the water 12 in the hydraulic pressure chamber 2 in the air storage post 7 by connecting pipe 11, water column in the air storage post 7 rises, the air column volume reduces, pointer tensimeter 3 demonstrates pressure value, and pressure is larger, and the volume of the air column on air storage post 7 tops is less.Thereby certain gas of demonstration certain mass, in the situation that temperature-resistant, pressure P and volume V are inversely proportional to.After demonstration finishes, open water-inflow and drain valve 10, the water discharge is got final product.
Claims (2)
1. be with manometric Boyle law demonstration device, comprise base, base is provided with pressure and transmits display system and gas volume testing system, it is characterized in that: described pressure transmits display system and comprises hydraulic pressure chamber, pointer tensimeter, safety valve and air induction conduit, pointer tensimeter and safety valve are located at the hydraulic pressure chamber top, the inner mouth of pipe of air induction conduit is positioned at the hydraulic pressure chamber internal upper part, air induction conduit is provided with the gas admittance valve that is positioned at the hydraulic pressure chamber outside, and the hydraulic pressure chamber bottom is communicated with the gas volume test macro by connecting pipe.
2. according to claim 1ly be with manometric Boyle law demonstration device, it is characterized in that: described gas volume test macro comprises air storage post, intake-discharge pipe and scaleplate, intake-discharge pipe is connected with the bottom of air storage post, intake-discharge pipe is provided with water-inflow and drain valve, scaleplate is located at air storage post sidepiece, and air storage post bottom is connected with an end of connecting pipe; Described hydraulic pressure chamber and air storage post are all made by transparent material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220339444 CN202650355U (en) | 2012-07-13 | 2012-07-13 | Boyle law demonstrator with pressure gage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220339444 CN202650355U (en) | 2012-07-13 | 2012-07-13 | Boyle law demonstrator with pressure gage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202650355U true CN202650355U (en) | 2013-01-02 |
Family
ID=47419425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220339444 Expired - Fee Related CN202650355U (en) | 2012-07-13 | 2012-07-13 | Boyle law demonstrator with pressure gage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202650355U (en) |
-
2012
- 2012-07-13 CN CN 201220339444 patent/CN202650355U/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: 20130102 Termination date: 20150713 |
|
| EXPY | Termination of patent right or utility model |