CN210836752U - Fluid pressure and flow velocity relation demonstration instrument - Google Patents
Fluid pressure and flow velocity relation demonstration instrument Download PDFInfo
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- CN210836752U CN210836752U CN201922086957.3U CN201922086957U CN210836752U CN 210836752 U CN210836752 U CN 210836752U CN 201922086957 U CN201922086957 U CN 201922086957U CN 210836752 U CN210836752 U CN 210836752U
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Abstract
The utility model discloses a fluid pressure and flow velocity relation demonstration instrument, which relates to the technical field of fluid pressure, and comprises a demonstration model, a ventilation box body, a gas shunt pipe, a gas source and an observation window, wherein both ends of the ventilation box body are respectively provided with an air inlet and an air outlet, the gas shunt pipe is fixedly arranged at one side of the ventilation box body close to the air inlet, the air outlet and the air inlet of the gas source are communicated, the air inlet of the gas shunt pipe corresponds to the air inlet, the air outlet and the air outlet of the gas shunt pipe correspond to each other, the gas shunt pipe is used for shunting gas from the gas source to ensure that the gas flows stably and changing the flowing direction of the gas, so that the gas flows to the demonstration model vertically, the demonstration model is suspended between the air outlet and the air outlet of the gas shunt pipe, the observation window is fixedly arranged on the box wall of the ventilation, the utility model discloses make people can be more accurate and audio-visual observation fluid pressure and the relation of the velocity of flow.
Description
Technical Field
The utility model relates to a technical field of fluid pressure especially relates to a fluid pressure and velocity of flow relation demonstration appearance.
Background
The relationship between the fluid pressure and the fluid flow rate is one of important knowledge points in physical academic research and physical teaching, and belongs to teaching difficulty, so that how to clearly show the relationship between the fluid pressure and the fluid flow rate is particularly important.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a fluid pressure and velocity of flow relation demonstration appearance to solve the problem that above-mentioned prior art exists, make people can be more accurate and audio-visual observation fluid pressure and velocity of flow's relation.
In order to achieve the above object, the utility model provides a following scheme:
the utility model provides a fluid pressure and velocity of flow relation demonstration appearance, including demonstration model, ventilation box, gaseous shunt tubes, air supply and observation window, the both ends of ventilation box are provided with air intake and air outlet respectively, gaseous shunt tubes fixed set up in be close to in the ventilation box one side of air intake, the gas outlet of air supply with the air intake intercommunication, the air inlet of gaseous shunt tubes with the air intake corresponds, the gas outlet of gaseous shunt tubes with the air outlet corresponds, the demonstration model hang in the gas outlet of gaseous shunt tubes with between the air outlet, the observation window is fixed set up in with the demonstration model position corresponds on the tank wall of ventilation box, through the observation window can observe the dynamic change of demonstration model.
Preferably, the air inlet of the air source is communicated with the air outlet of the ventilation box body through a pipeline.
Preferably, the air-conditioning system further comprises an air pump, and the air pump is arranged on a pipeline between the air inlet of the air source and the air outlet of the ventilation box body.
Preferably, the gas shunt pipe comprises a plurality of gas pipes, the pipe wall of each gas pipe is fixedly arranged with the pipe wall of the gas pipe adjacent to the gas pipe, and the gas pipes are parallel.
Preferably, the diameter of the air pipe is 0.5-1 cm, and the length of the air pipe is 15-25 cm.
Preferably, the demonstration model is a wing model.
Preferably, the pipeline adopts a gas flow pipe.
The utility model discloses for prior art gain following technological effect:
the utility model provides a fluid pressure and flow velocity relation demonstration instrument, which comprises a demonstration model, a ventilation box body, a gas shunt pipe, a gas source and an observation window, wherein both ends of the ventilation box body are respectively provided with an air inlet and an air outlet, the gas shunt pipe is fixedly arranged at one side of the ventilation box body close to the air inlet, the air outlet of the gas source is communicated with the air inlet, the air inlet of the gas shunt pipe corresponds to the air inlet, the air outlet of the gas shunt pipe corresponds to the air outlet, the gas shunt pipe is used for shunting gas from the gas source so that the gas flows stably, the flow velocity difference of the upper gas and the lower gas in the same vertical direction is reduced to the maximum extent, so that the phenomenon that the greater flow velocity difference is generated when the gas does not contact with the demonstration model is avoided, the experimental result is inaccurate, the flow direction of the gas can be slightly changed by the gas, further improvement the accuracy of experimental result, demonstration model hang between the gas outlet and the air outlet of gas shunt tubes, the observation window is fixed to be set up on the tank wall of the ventilation box body that corresponds with demonstration model position, can observe the dynamic change of demonstration model through the observation window, the utility model discloses make people can be more accurate and audio-visual observation fluid pressure and the relation of the velocity of flow.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a fluid pressure and flow velocity relationship demonstration instrument provided by the present invention;
fig. 2 is a schematic structural diagram of the gas flow dividing pipe provided by the present invention;
in the figure: 1-ventilating box body, 2-gas shunt pipe, 3-observation window, 4-demonstration model, 5-gas source and 6-air pump.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a fluid pressure and velocity of flow relation demonstration appearance to solve the problem that prior art exists, make people can be more accurate and audio-visual observation fluid pressure and velocity of flow's relation.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
The utility model provides a fluid pressure and flow velocity relation demonstration instrument, as shown in figure 1 and figure 2, including demonstration model 4, ventilation box 1, gas shunt tubes 2, air supply 5 and observation window 3, air intake and air outlet are respectively arranged at two ends of ventilation box 1, gas shunt tubes 2 are fixedly arranged at one side of ventilation box 1 near the air intake, the air outlet and the air intake of air supply 5 are communicated, the air inlet and the air intake of gas shunt tubes 2 correspond, the air outlet and the air outlet of gas shunt tubes 2 correspond, gas shunt tubes 2 are used for shunting the gas from air supply 5, make the gas flow stably, furthest reduce the flow velocity difference of the upper and lower gas in the same vertical direction, so as to avoid generating larger flow velocity difference when the gas does not contact demonstration model 4, lead to inaccurate experimental result, and gas shunt tubes 2 can slightly change the flow direction of the gas, make gaseous direction flow direction demonstration model 4 along perpendicular to demonstration model 4, further improvement the accuracy of experimental result, demonstration model 4 hangs between gas shunt tubes 2's gas outlet and air outlet, demonstration model 4 hangs with a fine rule, and the fine rule is selected the fine rule that flexibility is better as far as possible, and observation window 3 is fixed to be set up on the tank wall of the ventilation box body 1 that corresponds with demonstration model 4 position, can observe the dynamic change of demonstration model 4 through observation window 3, the utility model discloses make people can be more accurate and audio-visual observation fluid pressure and the relation of velocity of flow.
Further, the air inlet of the air source 5 is communicated with the air outlet of the ventilation box body 1 through a pipeline, air in the device is recycled, the air can be colored air, and the density of each part of air and the density change condition can be determined according to the color depth of the air.
Further, still include aspiration pump 6, aspiration pump 6 sets up on the pipeline between the air inlet of air supply 5 and the air outlet of ventilation box 1, air supply 5 is used for blowing to ventilation box 1, aspiration pump 6 is used for bleeding from ventilation box 1, both cooperation uses and can improve gaseous velocity of flow, gaseous velocity of flow is big more, it meets demonstration model 4 back, the difference of upper and lower velocity of flow of demonstration model 4 is big more, pressure differential is big more, the dynamic change of demonstration model 4 is showing more, can embody the relation of pressure size and velocity of flow more.
Further, the gas shunt pipe 2 comprises a plurality of gas pipes, the pipe wall of each gas pipe is fixedly arranged with the pipe wall of the gas pipe adjacent to the gas pipe, the gas pipes are all parallel, and the gas shunt pipe 2 is used for changing the flowing direction of gas so that the flowing direction of the gas in each gas pipe is parallel.
Furthermore, the diameter of the air pipe is 0.5-1 cm, preferably 0.5cm, and the length of the air pipe is 15-25 cm, preferably 20 cm.
Furthermore, the demonstration model 4 is a wing model, and fluid mechanics shows that when fluid flows, the flow direction of the fluid is changed when the fluid meets the demonstration model 4, and the fluid density is different due to the fact that the upper surface area and the lower surface area of a barrier are different and the flow speed is also different correspondingly, so that pressure difference is generated, the pressure difference can cause the demonstration model 4 to move correspondingly, and therefore the shape and the size of the demonstration model 4 can be set according to needs.
Furthermore, the pipeline adopts an airflow pipe, and the performance of the airflow pipe is better.
The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (7)
1. A fluid pressure and flow velocity relation demonstration instrument is characterized in that: including demonstration model, ventilation box, gaseous shunt tubes, air supply and observation window, the both ends of ventilation box are provided with air intake and air outlet respectively, gaseous shunt tubes fixed set up in be close to in the ventilation box one side of air intake, the gas outlet of air supply with the air intake intercommunication, the air inlet of gaseous shunt tubes with the air intake corresponds, the gas outlet of gaseous shunt tubes with the air outlet corresponds, the demonstration model hang in the gas outlet of gaseous shunt tubes with between the air outlet, the observation window fixed set up in with the demonstration model position corresponds on the tank wall of ventilation box, through the observation window can observe the dynamic change of demonstration model.
2. A fluid pressure versus flow rate demonstration instrument according to claim 1 wherein: and the air inlet of the air source is communicated with the air outlet of the ventilation box body through a pipeline.
3. A fluid pressure versus flow rate demonstration instrument according to claim 2, wherein: the air-pumping unit further comprises an air-pumping pump, and the air-pumping pump is arranged on a pipeline between the air inlet of the air source and the air outlet of the ventilation box body.
4. A fluid pressure versus flow rate demonstration instrument according to claim 1 wherein: the gas shunt pipe comprises a plurality of gas pipes, the pipe wall of each gas pipe is fixedly arranged with the pipe wall of the gas pipe adjacent to the gas pipe, and the gas pipes are parallel.
5. The fluid pressure versus flow rate demonstration instrument according to claim 4, wherein: the diameter of the air pipe is 0.5-1 cm, and the length of the air pipe is 15-25 cm.
6. A fluid pressure versus flow rate demonstration instrument according to claim 1 wherein: the demonstration model is a wing model.
7. A fluid pressure versus flow rate demonstration instrument according to claim 3 wherein: the pipeline adopts an airflow pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922086957.3U CN210836752U (en) | 2019-11-28 | 2019-11-28 | Fluid pressure and flow velocity relation demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922086957.3U CN210836752U (en) | 2019-11-28 | 2019-11-28 | Fluid pressure and flow velocity relation demonstration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210836752U true CN210836752U (en) | 2020-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922086957.3U Expired - Fee Related CN210836752U (en) | 2019-11-28 | 2019-11-28 | Fluid pressure and flow velocity relation demonstration instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210836752U (en) |
-
2019
- 2019-11-28 CN CN201922086957.3U patent/CN210836752U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200623 Termination date: 20211128 |