CN202650352U - Gas volume test system for Boyle law demonstrator - Google Patents
Gas volume test system for Boyle law demonstrator Download PDFInfo
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- CN202650352U CN202650352U CN 201220339439 CN201220339439U CN202650352U CN 202650352 U CN202650352 U CN 202650352U CN 201220339439 CN201220339439 CN 201220339439 CN 201220339439 U CN201220339439 U CN 201220339439U CN 202650352 U CN202650352 U CN 202650352U
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- gas volume
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- volume test
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Abstract
The utility model discloses a gas volume test system for a Boyle law demonstrator. The gas volume test system comprises an air storage column made of a transparent material, a connecting tube, an inlet/outlet pipe, and a scale plate. The connecting tube and the inlet/outlet pipe are respectively connected with two sides of a lower part of the air storage column. The inlet/outlet pipe is provided with an inlet/drain valve. The scale plate is disposed on a side of the air storage column. The gas volume test system is reasonably designed, and has simple structure, high specificity, low experimental error and extremely high visibility, thereby fully improving teaching effect. The gas volume test system is practical 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 of gas volume test macro of 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 gas volume test macro of the Boyle law demonstration device of teaching efficiency.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: the gas volume test macro of Boyle law demonstration device, comprise air storage post, connecting pipe, intake-discharge pipe and the scaleplate made by transparent material, connecting pipe is connected with intake-discharge pipe with the both sides, bottom of air storage post and is connected, intake-discharge pipe is provided with water-inflow and drain valve, and scaleplate is located at air storage post sidepiece.
Adopt technique scheme, the other end of connecting pipe transmits display system with the pressure of Boyle law demonstration device and is connected.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 connecting pipe is connected with the hydraulic pressure chamber bottom.
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, tensimeter demonstrates pressure value, and 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, the gas volume test macro of Boyle law demonstration device of the present utility model, comprise and be arranged on air storage post 7, connecting pipe 11, intake-discharge pipe 8 and the scaleplate 9 of being made by transparent material on the base 1, connecting pipe 11 is connected with intake-discharge pipe and is connected with the both sides, bottom of air storage post 7 respectively, intake-discharge pipe 8 is provided with water-inflow and drain valve 10, and scaleplate 9 is located at air storage post 7 sidepieces.
The Boyle law demonstration device comprises that also pressure transmits display system, pressure transmits display system and comprises and be arranged on hydraulic pressure chamber 2, pointer tensimeter 3, safety valve 4 and the air induction conduit 5 of being made by transparent material on the base 1, pointer tensimeter 3 and safety valve 4 are located at hydraulic pressure chamber 2 tops, the inner mouth of pipe of air induction conduit 5 is positioned at hydraulic pressure chamber 2 internal upper parts, air induction conduit 5 is provided with the gas admittance valve 6 that is positioned at hydraulic pressure chamber 2 outsides, and connecting pipe 11 is connected with hydraulic pressure chamber 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.
Pointer tensimeter 3 ranges are 0-0.25Mpa, scale division value 0.01Mpa, and 4.0 grades of precision, the error of indication should be not more than 1 scale division value.
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 (1)
1. the gas volume test macro of Boyle law demonstration device, it is characterized in that: comprise air storage post, connecting pipe, intake-discharge pipe and the scaleplate made by transparent material, connecting pipe is connected with intake-discharge pipe with the both sides, bottom of air storage post and is connected, intake-discharge pipe is provided with water-inflow and drain valve, and scaleplate is located at air storage post sidepiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220339439 CN202650352U (en) | 2012-07-13 | 2012-07-13 | Gas volume test system for Boyle law demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220339439 CN202650352U (en) | 2012-07-13 | 2012-07-13 | Gas volume test system for Boyle law demonstrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202650352U true CN202650352U (en) | 2013-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220339439 Expired - Fee Related CN202650352U (en) | 2012-07-13 | 2012-07-13 | Gas volume test system for Boyle law demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202650352U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203176A (en) * | 2014-06-11 | 2015-12-30 | 孟尧 | Novel fluid-discharge method gas amount metering device |
| CN105448165A (en) * | 2015-12-15 | 2016-03-30 | 李玲 | Device used for gas heating expansion experiment |
-
2012
- 2012-07-13 CN CN 201220339439 patent/CN202650352U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203176A (en) * | 2014-06-11 | 2015-12-30 | 孟尧 | Novel fluid-discharge method gas amount metering device |
| CN105448165A (en) * | 2015-12-15 | 2016-03-30 | 李玲 | Device used for gas heating expansion experiment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20130713 |