CN203085028U - Demonstration instrument for relationship of pressure and flow speed of liquid - Google Patents
Demonstration instrument for relationship of pressure and flow speed of liquid Download PDFInfo
- Publication number
- CN203085028U CN203085028U CN 201320094785 CN201320094785U CN203085028U CN 203085028 U CN203085028 U CN 203085028U CN 201320094785 CN201320094785 CN 201320094785 CN 201320094785 U CN201320094785 U CN 201320094785U CN 203085028 U CN203085028 U CN 203085028U
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- Prior art keywords
- liquid
- pressure
- water
- demonstration instrument
- flow velocity
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Abstract
The utility model relates to a demonstration instrument for a relationship of pressure and flow speed of liquid. The demonstration instrument comprises a horizontal pipe, a water inlet, a water outlet, a valve, vertical pipes and water wheels, wherein both ends of the horizontal pipe are respectively provided with the water inlet and the water outlet, the upper part of the horizontal pipe is provided with the vertical pipes, the interior of the horizontal pipe is provided with the water wheels, and the valve is arranged at the water outlet. The demonstration instrument has the advantages that the structure is simple, the operation is easy and convenient, and the performance is stable; and compared with the traditional apparatus, the relationship of the pressure and flow speed of the liquid can be more visually and effectively investigated, and the experiment investigation efficiency is improved.
Description
Technical field
The utility model relates to a kind of teaching aid, relates in particular to the relation demonstration instrument of a kind of liquid pressure and flow velocity.
Background technology
At present, in of the education activities of middle school physics for the relation of probing into liquid pressure and flow velocity, utilize the demonstrator of the connected vessels type of traditional teaching aid both ends open to finish and probe into demonstration, though this mode can reach the purpose of teaching, but the size of the cross-sectional area that the difference of the flow velocity of water can only be by horizontal tube in the experimentation is come reasoning and judging, need the student to have certain practical experience of life experience or stronger analysis and judgement and inferential capability, and this physical phenomenon intuitively presenting in life is also rare, therefore, be difficult for the pressure and the flow velocity effective connection of liquid are got up the education activities middle school student, even have all doubt, it is not high to cause actual experiment to probe into efficient.
The utility model content
Technical problem to be solved in the utility model provides a kind of simple in structure, simple to operation, stable performance, can intuitively present the relation of liquid pressure and flow velocity than conventional fixtures, improves experiment and probes into the liquid pressure of efficient and the relation demonstration instrument of flow velocity.
For addressing the above problem, the relation demonstration instrument of liquid pressure described in the utility model and flow velocity is characterized in that: this demonstrator comprises horizontal tube, and described horizontal tube two ends are provided with water inlet and water delivering orifice, and its top is provided with vertical tube; Described water delivering orifice is provided with valve.
Described horizontal tube is divided into the different two parts of cross-sectional area, and its inside is provided with water wheels.
The utility model compared with prior art has the following advantages:.
1, owing to horizontal tube top in the utility model is provided with vertical tube, therefore, can present the size of each several part liquid pressure in the horizontal tube intuitively by the height of liquid level in the vertical tube.
2, owing to water delivering orifice in the utility model is provided with valve, therefore, can control whether flowing of water easily.Water does not flow during valve closing, and what present is the principle and the feature of linker; During valve open, the water in the horizontal tube flows thereupon, and what present is the relation of the pressure and the flow velocity of liquid.Both can probe into the feature of linker, can probe into the relation of the pressure and the flow velocity of liquid again.
3, owing to horizontal tube in the utility model is divided into the different two parts of cross-sectional area, its inside is provided with water wheels, therefore, can effectively be the different two parts of flow velocity with the moisture in the horizontal tube, be located at its inner water wheels and then present the difference of flow velocity size intuitively, thereby the pressure and the flow velocity of liquid intuitively effectively connected.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1-horizontal tube, 2-water inlet, 3-water delivering orifice, 4-valve, 5-vertical tube, 6-water wheels.
Embodiment
As shown in Figure 1, the relation demonstration instrument of liquid pressure and flow velocity, this demonstrator comprises horizontal tube 1, water inlet 2, water outlet 3, valve 4, vertical tube 5, water wheels 6.
Wherein, the top of horizontal tube 1 is provided with vertical tube 5; Horizontal tube 1 is divided into the different two parts of cross-sectional area, and its inside is provided with water wheels 6; Water delivering orifice 3 is provided with valve 4.
Embodiment 1Probe into the feature of linker.
(1) this demonstrator level is vertically placed, and water inlet is connected with the water source.
(2) during valve closing, about this demonstrator in two vertical tubes liquid levels equal, illustrate that the total maintenance of each liquid level was equal when liquid was static in the linker.
Embodiment 2Probe into the relation of the pressure and the flow velocity of liquid.
(1) open valve, horizontal liquid in pipe flows thereupon, about liquid level irrelevancies in two vertical tubes.
(2) left side water wheels rotating speed is little, illustrates that the flow velocity of water is little herein; Liquid level height in the vertical tube of left side illustrates that the pressure of corresponding liquid is big.Right side water wheels rotating speed is big, illustrates that the flow velocity of water is big herein; Liquid level is low in the vertical tube of right side, illustrates that the pressure of corresponding liquid is little.
(3) comprehensive above can getting: the pressure of liquid is relevant with the flow velocity of liquid, and flow velocity is big more, and pressure is more little; Flow velocity is more little, and pressure is big more.
Claims (2)
1. the relation demonstration instrument of liquid pressure and flow velocity, it is characterized in that: this demonstrator comprises horizontal tube (1); Described horizontal tube (1) two ends are provided with water inlet (2) and water delivering orifice (3), and its top is provided with vertical tube (5); Described water delivering orifice (3) is provided with valve (4).
2. the relation demonstration instrument of liquid pressure as claimed in claim 1 and flow velocity is characterized in that: described horizontal tube (1) is divided into the different two parts of cross-sectional area, and its inside is provided with water wheels (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320094785 CN203085028U (en) | 2013-03-03 | 2013-03-03 | Demonstration instrument for relationship of pressure and flow speed of liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320094785 CN203085028U (en) | 2013-03-03 | 2013-03-03 | Demonstration instrument for relationship of pressure and flow speed of liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203085028U true CN203085028U (en) | 2013-07-24 |
Family
ID=48830846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320094785 Expired - Fee Related CN203085028U (en) | 2013-03-03 | 2013-03-03 | Demonstration instrument for relationship of pressure and flow speed of liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203085028U (en) |
-
2013
- 2013-03-03 CN CN 201320094785 patent/CN203085028U/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: 20130724 Termination date: 20140303 |