CN206021701U - A kind of learning gas pressure and the experimental provision of flow velocity relation - Google Patents
A kind of learning gas pressure and the experimental provision of flow velocity relation Download PDFInfo
- Publication number
- CN206021701U CN206021701U CN201620844511.6U CN201620844511U CN206021701U CN 206021701 U CN206021701 U CN 206021701U CN 201620844511 U CN201620844511 U CN 201620844511U CN 206021701 U CN206021701 U CN 206021701U
- Authority
- CN
- China
- Prior art keywords
- ergometer
- flow velocity
- gas pressure
- experimental provision
- contactor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Toys (AREA)
Abstract
A kind of learning gas pressure and the experimental provision of flow velocity relation, including battery, acousto-optic generator, contactor and wire, the contactor is constituted by the sheet metal for lying against both sides and across the arc sheetmetal for hanging thereon, the corner of the arc sheetmetal is provided with hole and wears and is connected to rope yarn, the rope yarn is coiled into four sections of lower sections for being articulated in the ergometer again through after hole, be connected with suspension wire above the ergometer, the top ring of the suspension wire around and be clamped on the cross bar by clip.The change of this utility model Optimal improvements air-flow speed causes the technology of pressure change and then triggers circuit switch, enhance experiment effect, experimenter can be regulated and controled with sharp at any time with observing in experiment, the match that is tested of being blown with mouth for development creates condition, interest increases, beneficial to the enthusiasm that mobilizing students are participated in.It is aided with the registration change of ergometer, reinforcing student is liked to physics.
Description
Technical field
This utility model is related to the experiment of a kind of physics educational apparatus, particularly a kind of learning gas pressure and flow velocity relation
Device.
Background technology
In prior art, it is more with the experimental provision of flow velocity relation to probe into gas pressure intensity, but effect is insipid mostly, no
The change of pressure size can be shown, what a kind of design novelty of shortage, effect is significant, interest were strong probes into device, Patent No.
201520633929.8 utility model patent " gas pressure intensity with flow velocity relation probe into device " be made that a kind of good try.
The experimental program includes the wire of battery, acousto-optic generator, switch and series connection, and the switch is by being placed in two
The sheet metal of side and constitute across the tinsel that is placed between two metal sheets, the tinsel is covered in bending arching
On the solid fiberboard of shape（Two ends including cardboard）, the shaped interior side of the cardboard is formed as gas channel, and the cardboard hangs
On ergometer up.The battery, acousto-optic generator and wire are fixed on the panel of setting, and the sheet metal is horizontal
It is fixed on the both sides of panel upper wall.Underframe is provided with below the panel, the panel and underframe are placed on iron stand, described
Ergometer is suspended on the cross bar above iron stand.After using said structure, mouth leads to the air-flow below cardboard arch containing suction pipe
Road is blown, or with air gun, syringe, hair dryer etc. against gas channel air blowing, it is found that cardboard is moved down, when being coated with gold
Category paillon foil cardboard two ends touch the sheet metal of panel both sides after, circuit ON, acousto-optic generator send interesting to listen to music and
The light for glittering, while can observe that the registration of ergometer becomes big, shows that cardboard is forced downwards.
Then guiding draws：Air velocity below arch cardboard speeds, and pressure reduces, and the flow velocity of cardboard upper air
And pressure is constant, cardboard is just moved down in the presence of upper and lower pressure difference, connects circuit.So that student understands that Bernoulli Jacob is former
Reason, where flow velocity is faster, pressure is less；Where flow velocity is slower, pressure is bigger.
By practical test, there is problems with the experimental program：
1 it was verified that according to " being blown containing suction pipe with mouth, or being blown with air gun, syringe described in the patent formula
Gas ", arch cardboard are motionless, and without experiment effect, reason is that gas channel is wide, wind-force is too weak, electricity consumption blowing and
Blown with mouth and just have experiment effect.
Therefore, not only reduce in order to " to widen " " concave inward structure on the inside of panel upper wall " of gas channel in the patent formula
Experiment effect, also increases cost of manufacture.
2nd, the experiment effect that electricity consumption blowing is blown is also not so good.Hair dryer blow airflow can drive really cardboard to
Lower movement, produces experiment effect so as to connect circuit, but in the huge noise that electricity is blown, music no longer " interesting to listen to ".According to
Quiet hair dryer, will certainly increase cost.
3rd, the experiment effect that is blown with mouth is also weak：Due to mouth blow be horizontally approaching blow, and " acousto-optic send out
Raw device and wire are fixed on the panel of setting ", notice that acousto-optic generator is integrally fixed on the panel of " setting ", this can hinder
Sight line, causes experimenter see acousto-optic generator, there is blind operation phenomenon, has influence on the carrying out of experiment.Because in reality
In the test of border, when finding the sheet metal that arch cardboard " just contacting " arrives both sides, faint light is first lighted, that is, contactor is also
In the big resistance states of " loose contact "；If blowing with increasing air-flow again, arch cardboard may proceed to push, and be changed into " contact
Lowest resistance state well ", can just accomplish that " interesting to listen to music, the light for glittering " volleys.The teacher or student of experiment, due to seeing
The state less than experiment soon successfully " faint light is first lighted " is examined, the effort that " with strength " blow is abandoned in advance, is caused to test
It is difficult the enthusiasm for successfully reducing experimenter's participation.It is unfavorable for the enthusiasm of mobilizing students in the form of air blowing of competing.
That is, it is also irrational, Ying Jiang that acousto-optic generator is fixed on " on the panel of setting " this technical characteristic
Acousto-optic generator is placed in the visual line of sight of experimenter.
4th, the gap of contactor is not easy to finely tune：" spacing distance " between arch cardboard and both sides sheet metal is inconvenient
Adjust, when spacing is excessive, cardboard moves down the sheet metal that can not touch both sides, the failure of an experiment；When spacing is too small, air-flow is rocked
Caused " sound, light " volleys, it is impossible to allow student to convince.
Utility model content
The purpose of this utility model is：In order to solve, above-mentioned experiment effect is bad, experimenter is not easy to observe, is unfavorable for out
Exhibition is played with mouth air blowing, the gap of contactor is not easy to the problems such as finely tuning, there is provided a kind of learning gas pressure and flow velocity
The experimental provision of relation, with optimization experiment effect, the interest of Enhancement test.
The technical solution of the utility model is：A kind of experimental provision of learning gas pressure and flow velocity relation, including battery,
Acousto-optic generator, contactor and wire, the contactor is by the sheet metal for lying against both sides and across being placed on two gold medals
Electrical connection movable part above category piece is constituted, and the electrical connection movable part is suspended on the cross bar above support by ergometer,
It is characterized in that：Base plate is provided with below the support, the battery, acousto-optic generator, contactor and wire are both placed in institute
State on base plate, the two metal sheets are fixed on the both sides of the base plate side by side, the electrical connection movable part is arc sheetmetal, institute
The corner for stating arc sheetmetal is provided with hole and wears and is connected to rope yarn, and the rope yarn through after hole is coiled into four sections and is articulated in the survey again
The lower section of power meter, is connected with suspension wire above the ergometer, the top ring of the suspension wire around and the horizontal stroke is clamped in by clip
On bar.
The acousto-optic generator is the sound-light toy that can be simultaneously emitted by sound and light, and the battery is placed in the toy.
The both sides of the arc sheetmetal are equipped with the horizontal face for crossing out, to increase the electric interface with sheet metal.
Two piece lead columns inherently preventing arc sheetmetal from back and forth rocking, the surface of the lead column are also followed closely on the base plate
It is enclosed with insulant.
After using said structure, with mouth to below arc sheetmetal gas channel blow, it is found that arc sheetmetal to
Lower movement, after the horizontal face of arc sheetmetal both sides is contacted with the two metal sheets of lower section, circuit ON, acousto-optic generator are just sent out
The light for go out interesting to listen to music, glittering, the registration for simultaneously observing ergometer become big, show that arc sheetmetal is subject to downward pressure
Power.Acousto-optic generator and contactor are placed on same base plate, are facilitated experimenter to observe in experiment and is beneficial to regulation and control.
The utility model has the advantages that：The change of Optimal improvements air-flow speed causes pressure change and then triggers circuit switch
Technology, enhance experiment effect, experimenter can be that the air blowing of development mouth carries out reality observe regulate and control with profit at any time in experiment
The match that tests creates condition, and interest increases, beneficial to the enthusiasm that mobilizing students are participated in.It is aided with the registration change of ergometer,
Reinforcing student is liked to physics.
Description of the drawings
Fig. 1 is structural representation of the present utility model；
In figure：1 base plate, 2 vertical rods, 3 nuts, 4 cross bars, 5 clips, 6 suspension wire free ends, 7 suspension wires, 8 ergometers, 9 rope yarns, 10
Hole, 11 lead columns, 12 sound-light toys, 13 wires, 14 sheet metals, 15 horizontal faces, 16 arc sheetmetals, 17 gas channels.
Specific embodiment
As shown in figure 1, support is made up of the cross bar 4 of the base plate 1, vertical rod 2 and top of lower section, perforate on base plate 1, for
2 screw-type of vertical rod is detachably connected on base plate 1, and cross bar 4 is detachably connected in vertical rod 2 by nut 3.
The child of " interesting to listen to music, glitter light " is sent out as this acousto-optic that tests with sound-light toy 12 using can be simultaneously emitted by
Raw device, raw material are easy to get, and also help liking for student.Toy is unlocked, its internal power line is disconnected, and is respectively connected to wire
On 13, then wire 13 is connected with external circuitses switch, is powered using the battery that toy is carried.When external contactor is connected
When, just simultaneously there is " interesting to listen to music, glitter light " in the sound-light toy.
As shown in figure 1, the contactor is by the sheet metal 14 of the both sides that are placed in and across being placed on two metal sheets 14
The arc sheetmetal 16 of side is constituted.The nail of sheet metal 14 is solid on base plate 1, and the both sides of arc sheetmetal 16 are provided with the horizontal stroke for crossing out
To face 15, horizontal face 15 is placed on corresponding two metal sheets 14, to increase both electric interfaces.
The corner of arc sheetmetal 16 is provided with hole 10 and wears and is connected to rope yarn 9, and the rope yarn 9 is coiled into four sections through after hole 10
The lower section of ergometer 8 is articulated in again.Due to four sections of rope yarns 9 actually same strand line, hole 10 is drawn in or is pulled out, it is possible to
Change the length of each section of rope yarn, so as to arc sheetmetal 16 is adjusted to horizontality, beneficial to lifting experiment effect.
The top of ergometer 8 is connected with suspension wire 7, and the upper end of suspension wire 7 is looped around on cross bar 4 and is clamped by clip 5, unclamps
Clip 5, pulls the suspension wire free end 6 of 7 end of suspension wire, adjusts the height of arc sheetmetal 16, that is, adjust horizontal face
Spacing between 15 and sheet metal 14, then suspension wire 7 is clamped on cross bar 4 with clip 5.
For avoiding rocking back and forth for arc sheetmetal 16, intrinsic two lead columns 11 are followed closely in the appropriate location of base plate 1, be oriented to
Post is coated with insulant.
Claims (4)
1. a kind of learning gas pressure and the experimental provision of flow velocity relation, including battery, acousto-optic generator, contactor and lead
Line, the contactor is by the sheet metal for lying against both sides and across the electrical connection movable part structure being placed on above two metal sheets
Into the electrical connection movable part is suspended on the cross bar above support by ergometer, it is characterised in that：Set below the support
There is base plate, the battery, acousto-optic generator, contactor and wire are both placed on the base plate, and the two metal sheets are side by side
The both sides of the base plate are fixed on, the electrical connection movable part is arc sheetmetal, and the corner of the arc sheetmetal is provided with hole
Hole is simultaneously worn and is connected to rope yarn, and the rope yarn is coiled into four sections of lower sections for being articulated in the ergometer again through after hole, the ergometer
Top is connected with suspension wire, the top ring of the suspension wire around and be clamped on the cross bar by clip.
2. the experimental provision of a kind of learning gas pressure and flow velocity relation as claimed in claim 1, is characterized in that：The acousto-optic is sent out
Raw device is the sound-light toy that can be simultaneously emitted by sound and light, and the battery is placed in the toy.
3. the experimental provision of a kind of learning gas pressure and flow velocity relation as claimed in claim 2, is characterized in that：The arc gold
The both sides of category plate are equipped with the horizontal face for crossing out, to increase the electric interface with sheet metal.
4. the experimental provision of a kind of learning gas pressure and flow velocity relation as claimed in claim 3, is characterized in that：On the base plate
Two piece lead columns inherently preventing arc sheetmetal from back and forth rocking also are followed closely, and the lead column is coated with insulant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620844511.6U CN206021701U (en) | 2016-08-07 | 2016-08-07 | A kind of learning gas pressure and the experimental provision of flow velocity relation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620844511.6U CN206021701U (en) | 2016-08-07 | 2016-08-07 | A kind of learning gas pressure and the experimental provision of flow velocity relation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206021701U true CN206021701U (en) | 2017-03-15 |
Family
ID=58247010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620844511.6U Expired - Fee Related CN206021701U (en) | 2016-08-07 | 2016-08-07 | A kind of learning gas pressure and the experimental provision of flow velocity relation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206021701U (en) |
-
2016
- 2016-08-07 CN CN201620844511.6U patent/CN206021701U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206021701U (en) | A kind of learning gas pressure and the experimental provision of flow velocity relation | |
| CN207653934U (en) | A kind of work of fine arts displaying device | |
| CN106981240A (en) | A kind of middle school student's physical experiment apparatus | |
| CN203149948U (en) | Double-pendulum experimental instrument | |
| CN204884321U (en) | Physical teaching is with overweight weightless presentation device | |
| CN202976603U (en) | Teaching demonstration model for vibration damping effect of vibration damping material | |
| CN208819442U (en) | Economics line chart display board | |
| CN218159389U (en) | Display device for simulating tornado | |
| CN203149946U (en) | Gravity center experimental instrument | |
| CN212484703U (en) | Simple pendulum capable of simulating and changing gravity acceleration | |
| CN205158744U (en) | Sound wave driven magnetic suspension rotator demonstration appearance | |
| CN204740762U (en) | Music teaching device | |
| CN210992478U (en) | Hypnosis device for psychology experiment | |
| CN202939870U (en) | New type horizontal projectile motion demonstration instrument | |
| CN206021717U (en) | Comprehensive electromagnetic experiment instrument | |
| CN214847342U (en) | Swing mechanism demonstration instrument | |
| CN203149968U (en) | Magnetic shielding scientific experimental device | |
| CN217645784U (en) | Artificial intelligence convenient type body-building system | |
| CN207970463U (en) | A kind of building blocks grafting experimental provision | |
| CN203217849U (en) | Magnetic-levitation science experimental apparatus | |
| CN203631014U (en) | Curved surface demonstrator used for teaching advanced mathematics | |
| CN205158743U (en) | Air pressure experiences device | |
| CN207282051U (en) | Electromagnetic relationship principle demonstrating model | |
| CN206179353U (en) | Motor principle demonstration teaching aid | |
| JPH05187959A (en) | Generating apparatus of turbulent flow in wind tunnel |
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: 20170315 Termination date: 20170807 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |