CN202650356U - Pressure digital display type pressure transmission display system for Boyle's law demonstrator - Google Patents
Pressure digital display type pressure transmission display system for Boyle's law demonstrator Download PDFInfo
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- CN202650356U CN202650356U CN 201220339448 CN201220339448U CN202650356U CN 202650356 U CN202650356 U CN 202650356U CN 201220339448 CN201220339448 CN 201220339448 CN 201220339448 U CN201220339448 U CN 201220339448U CN 202650356 U CN202650356 U CN 202650356U
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- Prior art keywords
- pressure
- container
- display system
- pressure transmission
- transmission display
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- 230000005540 biological transmission Effects 0.000 title abstract description 8
- 230000006698 induction Effects 0.000 claims description 11
- 239000012780 transparent material Substances 0.000 claims description 5
- 238000012360 testing method Methods 0.000 abstract description 8
- 238000013461 design Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 22
- 238000003860 storage Methods 0.000 description 18
- 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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- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a pressure digital display type pressure transmission display system for a Boyle's law demonstrator. The pressure digital display type pressure transmission display system comprises a base, and a pressure transmission display system and a gas volume test system disposed on the base. The pressure transmission display system comprises a container, a pressure sensor, a microprocessor, a pressure display screen, a safety valve, and an air intake pipe. The pressure sensor and the safety valve are disposed on top of the container. The pressure sensor and the pressure display screen are connected with the microprocessor through data lines. An inner end pipe mouth of the air intake pipe is disposed on an upper part inside the container. The intake valve is disposed on the air intake pipe outside the container. A lower part of the container is communicated with the gas volume test system through a connecting pipe. The pressure digital display type pressure transmission display system is reasonable in design, simple in structure, good in specificity, low in experimental error, and has very good visibility, thereby fully improving teaching effect. The pressure digital display type pressure transmission display system 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, and particularly a kind of pressure digital display pressure of Boyle law demonstration device transmits display system.
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, and the pressure digital display pressure that provide that a kind of experimental precision is high, visibility is strong, helps to promote the Boyle law demonstration device of teaching efficiency transmits display system.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: the pressure digital display pressure of Boyle law demonstration device transmits display system, comprise and be located at the container of being made by transparent material on the base, pressure transducer, microprocessor, the pressure display screen, safety valve, connecting pipe and air induction conduit, pressure transducer and safety valve are located at container top and extend into internal tank, pressure transducer is connected by data line with the pressure display screen and is connected with microprocessor, the inner mouth of pipe of air induction conduit is positioned at the container internal upper part, air induction conduit is provided with the gas admittance valve that is positioned at external container, and connecting pipe one end is connected with the container lower sides.
Adopt technique scheme, the other end of connecting pipe is connected with the gas volume test macro of Boyle law demonstration device, the 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 communicated with the container bottom by a joint connecting pipe.
When demonstrate in the classroom, open first water-inflow and drain valve, in the air storage post and by connecting pipe, in container, 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 container, pressed gas is pressed into the water in the container in the air storage post by connecting pipe, pressure transducer collects the pressure signal in the container, pressure signal is transferred to microprocessor, microprocessor is converted to digital signal with pressure signal and demonstrates concrete pressure numerical value at the pressure display screen, 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 temperature-resistant situation, 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 pressure digital display pressure of Boyle law demonstration device of the present utility model transmits display system, comprise and be located at the container 2 of being made by transparent material on the base 1, pressure transducer 3, microprocessor 13, pressure display screen 14, safety valve 4, connecting pipe 11 and air induction conduit 5, pressure transducer 3 and safety valve 4 are located at container 2 tops and extend into container 2 inside, pressure transducer 3 is connected with the pressure display screen and is connected with microprocessor 13 by data line respectively, the inner mouth of pipe of air induction conduit 5 is positioned at container 2 internal upper parts, air induction conduit 5 is provided with the gas admittance valve 6 that is positioned at container 2 outsides, and connecting pipe 11 1 ends are connected with container 2 lower sides.
The other end of connecting pipe 11 is connected with the gas volume test macro of Boyle law demonstration device.
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 connecting pipe 11 containers 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.Container 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.
Bian converts the signal that pressure transducer 3 gathers to digital signal with pressure transducer 3 test pressures by microprocessor 13, shows at pressure display screen 14, the pressure range is 0-0.25Mpa, scale division value 0.01Mpa, 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 container 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 container 2 interior charged pressure gases, pressed gas is pressed into the water 12 in the container 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, pressure transducer 3 collects the pressure signal in the container 2, pressure signal is transferred to microprocessor 13, microprocessor 13 is converted to digital signal with pressure signal and demonstrates concrete pressure numerical value at pressure display screen 14, and numerical value 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 temperature-resistant situation, 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 pressure digital display pressure of Boyle law demonstration device transmits display system, it is characterized in that: comprise being located at the container of being made by transparent material on the base, pressure transducer, microprocessor, the pressure display screen, safety valve, connecting pipe and air induction conduit, pressure transducer and safety valve are located at container top and extend into internal tank, pressure transducer is connected by data line with the pressure display screen and is connected with microprocessor, the inner mouth of pipe of air induction conduit is positioned at the container internal upper part, air induction conduit is provided with the gas admittance valve that is positioned at external container, and connecting pipe one end is connected with the container lower sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220339448 CN202650356U (en) | 2012-07-13 | 2012-07-13 | Pressure digital display type pressure transmission display system for Boyle's law demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220339448 CN202650356U (en) | 2012-07-13 | 2012-07-13 | Pressure digital display type pressure transmission display system for Boyle's law demonstrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202650356U true CN202650356U (en) | 2013-01-02 |
Family
ID=47419426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220339448 Expired - Fee Related CN202650356U (en) | 2012-07-13 | 2012-07-13 | Pressure digital display type pressure transmission display system for Boyle's law demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202650356U (en) |
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2012
- 2012-07-13 CN CN 201220339448 patent/CN202650356U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20130713 |