CN218241164U - Teaching device for hydrodynamics experiment - Google Patents
Teaching device for hydrodynamics experiment Download PDFInfo
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- CN218241164U CN218241164U CN202222297981.3U CN202222297981U CN218241164U CN 218241164 U CN218241164 U CN 218241164U CN 202222297981 U CN202222297981 U CN 202222297981U CN 218241164 U CN218241164 U CN 218241164U
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Abstract
The utility model relates to a physical teaching apparatus field specifically discloses a teaching device for hydrodynamics experiment, a serial communication port, include: the bottom wall of the base is provided with rollers; the liquid supply device is arranged on the base and is used for providing experimental liquid; a measurement assembly disposed on the base; one end of the first experiment pipe and one end of the second experiment pipe are communicated with the liquid supply device through communicating pieces, and the other ends of the first experiment pipe and the second experiment pipe are communicated with the measuring assembly; wherein the inner pipe wall of the first test pipe has a coefficient of friction that is less than the coefficient of friction of the inner pipe wall of the second test pipe. The utility model has the advantages of can let the student learn the mobile state of the same kind fluid under the pipeline of different coefficient of friction.
Description
Technical Field
The utility model relates to a physics teaching aid field, in particular to a teaching device for hydrodynamics experiments.
Background
In the teaching and practice process related to fluid mechanics and fluid engineering, the flow rate of a circular tube under different friction coefficients is used as an important physical quantity for reflecting the flowing state of fluid and is commonly used for expressing the quantity of the fluid passing through a specific surface in unit time.
In teaching practice, in order to enable students to know and master related knowledge of classification, form, principle, measurement precision, characteristics, application conditions and the like of common flowmeters in engineering, teaching links of flowmeter cognition, flowmeter key performance parameter measurement and flowmeter correction experiment are designed, the common flowmeters in engineering are displayed to the students, and related measurement work is completed to achieve the teaching purpose of mastering the meter cognition, the measurement principle and the measurement method.
The flow measuring device for teaching at present generally directly measures the flow of fluid through a turbine flowmeter, so that although the measuring speed is high and the measuring result is accurate, the flow of the liquid of the circular tube under different friction coefficients cannot be directly measured, and a learning link of observing the flow state conversion process of the liquid laminar flow and the turbulent flow of the circular tube under different friction coefficients in Reynolds experiment teaching and the practical operation capability of measuring the critical Reynolds number and judging the flow state of the circular tube are ignored.
SUMMERY OF THE UTILITY MODEL
There is foretell not enough to prior art, the utility model aims to provide a teaching device for hydrodynamics experiment has the advantage that can let the student learn the mobile state of the same kind of fluid under different coefficient of friction's pipeline.
The above technical purpose of the present invention can be achieved by the following technical solutions:
a teaching device for fluid mechanics experiments, comprising:
the bottom wall of the base is provided with rollers;
the liquid supply device is arranged on the base and is used for providing experimental liquid;
a measurement assembly disposed on the base;
one end of the return pipe assembly is connected with the liquid supply device, the other end of the return pipe assembly is detachably connected with the measuring assembly, and the liquid supply device is communicated with the measuring assembly through the return pipe assembly;
one end of the first experiment pipe and one end of the second experiment pipe are communicated with the liquid supply device through communicating pieces, and the other ends of the first experiment pipe and the second experiment pipe are communicated with the measuring assembly;
the display module is arranged on the liquid supply device and is electrically connected with the measuring component;
wherein the coefficient of friction of the inner pipe wall of the first test tube is less than the coefficient of friction of the inner pipe wall of the second test tube.
Compared with the prior art, the utility model discloses an inconsistent experiment pipe of interior pipe wall coefficient of friction lets the student learn the flow state of homogeneous flow under different coefficient of friction's pipeline more directly perceivedly to can retrieve experimental liquid through the back flow subassembly, can be to experimental liquid cyclic utilization, overall structure is simple, and convenient to use has improved the ability of student in the aspect of the real operation hands effectively.
As a preferable aspect of the present invention, the liquid supply device includes:
the water tank is arranged on the base and used for storing experimental liquid;
the centrifugal pump is arranged on the water tank, a water pumping port of the centrifugal pump is connected with the water tank through a water pumping pipe, a water delivery port of the centrifugal pump is provided with a water delivery pipe, and the communicating piece is respectively communicated with the water delivery pipe, the first experiment pipe and the second experiment pipe;
and the overflow valve is arranged on the water tank and is respectively communicated with the centrifugal pump and the water tank.
By adopting the scheme, the centrifugal pump can convey experimental liquid in the water tank to the first experimental pipe and the second experimental pipe, the overflow valve can generate flow fluctuation when the flow of the first experimental pipe and the second experimental pipe is adjusted, the centrifugal pump can expand redundant flow pressure, and redundant flow and fluctuation can overflow into the water tank.
As a preferred aspect of the present invention, the measuring unit includes:
the supporting column is arranged on the base;
the second measuring box is arranged between the first measuring box and the supporting column and is respectively connected with the first measuring box and the supporting column, the first measuring box is connected with the second measuring box through a connecting piece, the first measuring box is communicated with the first experiment tube, and the second measuring box is communicated with the second experiment tube;
the first measuring box and the second measuring box are respectively provided with a liquid level sensor;
the first experiment pipe and the second experiment pipe are both provided with a temperature sensor and a water rotor flow meter;
the liquid level sensor, the temperature sensor and the water rotor flow meter are all electrically connected with the display module.
By adopting the scheme, the liquid level sensor can detect the liquid level in the first measuring box and the second measuring box, the temperature sensor can feed back the current temperature of the experimental liquid of the first experimental pipe and the second experimental pipe, and the water rotor flow meter can feed back the current flow of the experimental liquid of the first experimental pipe and the second experimental pipe, so that accurate experimental data can be provided for students, and the learning effect of the students is effectively improved.
As the preferred scheme of the utility model, the material of making of first measurement case and the material of making of second measurement case is transparent material.
By adopting the scheme, the first measuring box and the second measuring box are made of transparent materials, so that students can more intuitively observe the difference of the required time of the same fluid volume when the experimental liquid flows in the pipelines with different friction coefficients, and the influence of the pipelines with different friction coefficients on the flow of the same fluid can be learned.
As a preferred scheme of the present invention, the first measuring box and the second measuring box are provided with a threaded through hole, a plugging assembly, and a guiding seat for guiding the liquid in the first measuring box or the second measuring box to flow to the threaded through hole; the thread through hole is provided with a groove, and the plugging component is arranged at the groove.
Adopt foretell scheme, the water conservancy diversion seat can be with the liquid drainage to screw thread through-hole department in first measurement case or the second measurement case to the liquid for the experiment that the messenger is located first measurement incasement and second measurement incasement flows into to the water tank through the return line subassembly in, thereby realizes the cyclic utilization of liquid for the experiment.
As the preferred scheme of the utility model, the leaking stoppage subassembly includes: elastic component and sealed piece, the one end of elastic component with the cell wall of recess is connected, the other end with sealed piece is connected, sealed piece cover is equipped with the sealing member, the sealing member with the cell wall of recess is inconsistent.
Adopt foretell scheme, when the seal block was promoted by the screwed pipe, the elastic component can apply a pretightning force to the seal block, when the screwed pipe was dismantled from the screw through-hole department, the elastic component can make the seal block reset to the pretightning force that the seal block was applyed, still overlaps on the seal block simultaneously and is equipped with the sealing member, through the cooperation of elastic component, seal block and sealing member, the purpose of automatic leaking stoppage can be realized to first measuring box and second measuring box.
As a preferable scheme of the present invention, the backflow pipe assembly includes a flexible hose and a threaded pipe, one end of the flexible hose is communicated with the water tank, and the other end is communicated with the threaded pipe; one end of the threaded pipe, which is far away from the telescopic hose, is provided with a notch.
Adopt foretell scheme, the screwed pipe can be connected in order to realize dismantling with the screw through hole cooperation on two measurement casees to screwed pipe principle bellows's one end still is provided with the breach, and when screwed pipe and screw through hole screw-thread fit, the one end that the bellows was kept away from to the screwed pipe can promote sealed piece, and the screwed pipe is linked together through breach and first measurement case or second measurement incasement portion this moment, makes inside liquid flow back to the water tank through screwed pipe and bellows respectively.
As the utility model discloses a preferred scheme, first experiment pipe and all be provided with adjusting valve on the second experiment pipe.
Adopt foretell scheme, through the adjusting valve on controlling first experiment pipe and the second experiment pipe, just can control the flow direction of liquid for the experiment to can more conveniently carry out the experiment teaching.
As the preferred scheme of the utility model, the display module is the display screen.
By adopting the scheme, students can more conveniently record current experimental data through the display screen.
As a preferable embodiment of the present invention, the difference D between the friction coefficient of the inner wall of the first test tube and the friction coefficient of the inner wall of the second test tube ranges from 0.01 to 0.06.
Adopt foretell scheme, the coefficient of friction between first experiment pipe and the second experiment pipe has certain difference, can let the experimental effect more obvious to can improve student's learning efficiency and learning effect.
The teaching device for the hydrodynamics experiment has the following beneficial effects: the student can better observe the flowing state of the same fluid through the two experimental tubes with different inner tube wall friction coefficients, so that the flow change of the same fluid under different inner tube wall friction coefficients can be learned, the whole structure is simple, the use is convenient, and the learning effect and the practical operation ability of the student in the aspect of fluid mechanics can be effectively improved; secondly, promote sealed piece through the screwed pipe, the experiment in two detection casees can be through the breach on the screwed pipe in proper order through screwed pipe and flexible hose flow to the water tank to realize the purpose to experiment liquid recycle, take off the screwed pipe after retrieving, sealed piece can automatic re-setting under the effect of elastic component, and sealing member and recess on the sealed piece are contradicted, make the screw hole way seal.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, 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 the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of a teaching device for a hydrodynamics experiment according to the present invention;
fig. 2 is a schematic diagram of the internal structure of the first measuring chamber and the second measuring chamber in the teaching device for hydrodynamics experiments of the present invention;
FIG. 3 is an enlarged schematic view at A in FIG. 2;
in the figure: 1. a base; 2. a roller; 3. a liquid supply device; 31. a water tank; 32. a centrifugal pump; 33. a water pumping pipe; 34. a water delivery pipe; 35. a communicating member; 36. an overflow valve; 4. a measurement component; 41. a support pillar; 42. a first measuring box; 43. a second measuring box; 44. a liquid level sensor; 45. a temperature sensor; 46. a water rotameter; 47. a threaded through hole; 471. a groove; 48. a plugging component; 481. an elastic member; 482. a sealing block; 483. a seal member; 49. a flow guide seat; 5. a return line assembly; 51. a flexible hose; 52. a threaded pipe; 53. a notch; 6. a first test tube; 7. a second test tube; 8. a display module; 9. adjusting the valve; 10. a valve; 11. a connecting member.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
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 of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
It should be noted that, if the present invention relates to a directional indication (such as up, down, left, right, front, back, 8230 \8230;, 8230;), the directional indication is only used to explain the relative position relationship between the components in a specific posture, the motion situation, etc., and if the specific posture is changed, the directional indication is changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" and/or "appears throughout, the meaning includes three parallel schemes, for example," A and/or B "includes scheme A, or scheme B, or a scheme satisfying both schemes A and B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a teaching device for hydrodynamics experiment.
Referring to fig. 1, in an embodiment of the present invention, the teaching apparatus for hydrodynamics experiment includes: the device comprises a base 1, a liquid supply device 3, a measuring component 4, a backflow pipe component 5, a first experiment pipe 6, a second experiment pipe 7 and a display module 8, wherein the bottom wall of the base 1 is provided with a roller 2; the liquid supply device 3 is arranged on the base 1, and the liquid supply device 3 is used for supplying experimental liquid; the measuring component 4 is arranged on the base 1; one end of the return pipe component 5 is connected with the liquid supply device 3, the other end of the return pipe component is detachably connected with the measuring component 4, and the liquid supply device 3 is communicated with the measuring component 4 through the return pipe component 5; one end of the first experiment pipe 6 and one end of the second experiment pipe 7 are communicated with the liquid supply device 3 through the communicating piece 35, and the other ends are communicated with the measuring component 4; the display module 8 is arranged on the liquid supply device 3 and is electrically connected with the measuring component 4; wherein the friction coefficient of the inner pipe wall of the first test pipe 6 is smaller than that of the second test pipe 7, wherein in the present embodiment, exemplarily, the friction coefficient of the inner pipe wall of the first test pipe is 0.015, and the friction coefficient of the inner pipe wall of the second test pipe is 0.06.
Through the inconsistent experiment pipe of two interior pipe wall coefficient of friction let the student learn the flow state of the same kind of fluid under the pipeline of different coefficient of friction more directly perceivedly to can retrieve the experiment liquid through return pipe subassembly 5, can be to experiment liquid cyclic utilization, overall structure is simple, high durability and convenient use, the ability of student in the aspect of the real operation hand has been improved effectively, the coefficient of friction between first experiment pipe and the second experiment pipe has certain difference, can let the experiment effect more obvious, thereby can improve student's learning efficiency and learning effect.
Referring to fig. 1, in an embodiment, the liquid supply device 3 includes: the device comprises a water tank 31, a centrifugal pump 32 and an overflow valve 36, wherein the water tank 31 is arranged on a base 1, and the water tank 31 is used for storing experimental liquid; the centrifugal pump 32 is arranged on the water tank 31, a water pumping port of the centrifugal pump 32 is connected with the water tank 31 through a water pumping pipe 33, a water delivery port of the centrifugal pump 32 is provided with a water delivery pipe 34, the communicating piece 35 is respectively communicated with the water delivery pipe 34, the first experiment pipe 6 and the second experiment pipe 7, and a tee piece is adopted as the communicating piece 35 in the embodiment; the relief valve 36 is provided on the tank 31 and communicates with the centrifugal pump 32 and the tank 31, respectively. The centrifugal pump 32 can convey the experimental liquid in the water tank 31 to the first experimental pipe 6 and the second experimental pipe 7, the overflow valve 36 can generate flow fluctuation when the flow of the first experimental pipe 6 and the second experimental pipe 7 is adjusted, the centrifugal pump 32 can expand redundant flow pressure, and redundant flow and fluctuation can overflow into the water tank 31.
Referring to fig. 1-3, in one embodiment, the measurement assembly 4 includes: the device comprises a supporting column 41, a first measuring box 42, a second measuring box 43, a liquid level sensor 44, a temperature sensor 45 and a water rotor flow meter 46, wherein the supporting column 41 is arranged on a base 1; the second measuring box 43 is arranged between the first measuring box 42 and the supporting column 41 and is respectively connected with the first measuring box 42 and the supporting column 41, the first measuring box 42 is connected with the second measuring box 43 through the connecting piece 11, the first measuring box 42 is communicated with the first experiment tube 6, and the second measuring box 43 is communicated with the second experiment tube 7; the first measuring tank 42 and the second measuring tank 43 are both provided with liquid level sensors 44; the first experiment pipe 6 and the second experiment pipe 7 are both provided with a temperature sensor 45 and a water rotameter 46; wherein, the liquid level sensor 44, the temperature sensor 45 and the water rotameter 46 are all electrically connected with the display module 8. Level sensor 44 can detect the liquid level in first measurement case 42 and the second measurement case 43, and temperature sensor 45 can feed back the current temperature of the experimental liquid of first experiment pipe 6 and second experiment pipe 7, and water rotameter 46 can feed back the current flow of the experimental liquid of first experiment pipe 6 and second experiment pipe 7 to can provide accurate experimental data for the student, improve student's learning effect effectively.
Referring to fig. 1, in one embodiment, the first measurement chamber 42 and the second measurement chamber 43 are made of transparent materials, and in this case, an acrylic material is exemplarily used as the material for the first measurement chamber 42 and the second measurement chamber 43. The first measuring box 42 and the second measuring box 43 are made of transparent materials, so that students can more intuitively observe the difference of the time required by obtaining the same fluid volume when the experimental liquid flows in the pipelines with different friction coefficients, and the influence of the pipelines with different friction coefficients on the flow of the same fluid can be learned.
Referring to fig. 2 and 3, in an embodiment, the first measuring chamber 42 and the second measuring chamber 43 are provided with a threaded through hole 47, a leak stopping assembly 48 and a flow guiding seat 49, and the flow guiding seat 49 is used for guiding the liquid in the first measuring chamber 42 or the second measuring chamber 43 to flow to the threaded through hole 47; a groove 471 is arranged at the threaded through hole 47, and the leaking stoppage component 48 is arranged at the groove 471. The diversion seat 49 can divert the liquid in the first measuring tank 42 or the second measuring tank 43 to the through hole 47, so that the experimental liquid in the first measuring tank 42 and the second measuring tank 43 flows into the water tank 31 through the return pipe assembly 5, thereby recycling the experimental liquid.
Referring to fig. 2 and 3, in one embodiment, lost circulation assembly 48 includes: elastic component 481 and sealed piece 482, the one end and the cell wall of recess 471 of elastic component 481 are connected, and the other end is connected with sealed piece 482, and sealed piece 482 cover is equipped with sealing member 483, and sealing member 483 is inconsistent with the cell wall of recess 471, in this embodiment, adopts the sealing washer as sealing member 483. When the sealing block 482 is pushed by the threaded pipe 52, the elastic piece 481 can apply a pretightening force to the sealing block 482, when the threaded pipe 52 is detached from the threaded through hole 47, the pretightening force applied to the sealing block 482 by the elastic piece 481 can reset the sealing block 482, meanwhile, a sealing piece 483 is sleeved on the sealing block 482, and through the matching of the elastic piece 481, the sealing block 482 and the sealing piece 483, the purpose of automatic leakage blocking can be achieved by the first measuring box 42 and the second measuring box 43.
Referring to fig. 2 and 3, in one embodiment, the return pipe assembly 5 includes an extensible hose 51 and a threaded pipe 52, the extensible hose 51 having one end communicating with the water tank 31 and the other end communicating with the threaded pipe 52; the end of the threaded tube 52 remote from the flexible hose 51 is provided with a notch 53. Screwed pipe 52 can measure the screw through hole 47 cooperation on the case with two in order to realize dismantling the connection to screwed pipe 52 principle extension hose 51's one end still is provided with breach 53, and when screwed pipe 52 and screw through hole 47 screw-thread fit, screwed pipe 52 kept away from the one end of extension hose 51 can promote sealed piece 482, and screwed pipe 52 is linked together through breach 53 and first measurement case 42 or second measurement case 43 are inside this moment, makes inside liquid flow back to water tank 31 through screwed pipe 52 and extension hose 51 respectively.
Referring to fig. 1, in one embodiment, a regulating valve 9 and a valve 10 are disposed on each of the first experiment tube 6 and the second experiment tube 7. Through the adjusting valve 9 of controlling on first experiment pipe 6 and the second experiment pipe 7, just can control the flow direction of liquid for the experiment to can carry out the experiment teaching more conveniently.
Referring to fig. 1, in one embodiment, the display module 8 is a display screen. The student can more conveniently record current experimental data through the display screen.
The student can better observe the flowing state of the same fluid through the two experimental tubes with different inner tube wall friction coefficients, so that the flow change of the same fluid under different inner tube wall friction coefficients can be learned, the whole structure is simple, the use is convenient, and the learning effect and the practical operation ability of the student in the aspect of fluid mechanics can be effectively improved; secondly, through screwed pipe 52 promotion sealing block 482, the experimental liquid in two detection casees can flow to water tank 31 through the breach 53 on screwed pipe 52 in proper order through screwed pipe 52 and flexible hose 51 to realize the purpose to experimental liquid recycle, take off screwed pipe 52 after retrieving, sealing block 482 can automatic re-setting under elastic component 481's effect, and sealing member 483 on the sealing block 482 contradicts with recess 471, makes the screw hole way seal.
The utility model discloses a theory of operation does: in operation, the centrifugal pump 32, the liquid level sensor 44 and the display are powered on, the centrifugal pump 32 draws the experimental liquid from the water tank 31 through the water pumping pipe 33 under the condition that the regulating valve 9 on the second experimental pipe 7 is closed and the regulating valve 9 on the first experimental pipe 6 is opened, at the moment, the timing is started by using an external stopwatch, the experimental liquid is input into the first experimental pipe 6 through the water conveying pipe 34 and the communicating member 35, the experimental liquid flows into the first measuring tank 42 connected with the first experimental pipe 6 through the first experimental pipe 6, the height of the liquid in the first measuring tank 42 is observed, the centrifugal pump 32 is closed after the determination, the stopwatch is closed, the liquid level sensor 44 transmits the height of the liquid to the display, the display screen displays the liquid level data, the length and the width of the first measuring tank 42 are known results, when the liquid volume is calculated, the volume of the diversion seat 49 needs to be subtracted, then the volume of the experimental liquid in the first measuring tank 42 is calculated, the volume of the experimental liquid flowing through the first experimental pipe 6 is calculated by using the obtained volume of the stopwatch, then the experimental liquid flows into the second experimental pipe 7 when the experimental pipe 7 is closed, the experimental liquid in the second experimental pipe 7, the experimental pipe is connected with the second experimental pipe 7, the experimental liquid flow control valve 43, when the experimental liquid in the experimental pipe 7, the experimental pipe is closed, the experimental pipe 7, the experimental pipe is connected with the experimental pipe 7, the experimental liquid, the experimental pipe 7, the experimental liquid flow control, calculating different experimental liquid flows, wherein the experiment is operated under constant flow pressure, the centrifugal pump 32 generates flow fluctuation in the operation process, the overflow valve 36 can expand redundant flow pressure, redundant flow and fluctuation can overflow into the water tank 31, the centrifugal pump 32 becomes a variable pump capable of being debugged, the experimental liquid respectively flows in the first experiment pipe 6 and the second experiment pipe 7 by the device, the experimental liquid with the same volume is obtained by control, the time required by the flowing of the experimental liquid with the same volume is obtained by metering, the flowing flow of the experimental liquid in the first experiment pipe 6 and the second experiment pipe 7 can be measured by the volume and the time of the experimental liquid, the experimental device is suitable for teaching of high school hydrodynamics experiment courses, has the characteristics of simple structure, convenient use and the like, and has obvious effect of improving the practical operation ability of students;
after the measurement is finished, the telescopic hose 51 is pulled, the telescopic hose 51 is extended, the threaded pipe 52 is screwed into the threaded through hole 47, the threaded pipe 52 extrudes the sealing block 482 along with the continuous entering of the threaded pipe 52, the elastic piece 481 is stretched at the moment, the sealing block 482 is far away from the groove 471, the experimental liquid flows into the threaded pipe 52 through the notch 53 at the moment, then flows into the telescopic hose 51 through the threaded pipe 52 and finally flows into the water tank 31 in a centralized manner, the recycling of the experimental liquid is realized, after the recovery is finished, the threaded pipe 52 is screwed outwards until the threaded pipe 52 is completely screwed out, at the moment, under the action of the elastic piece 481, the sealing block 482 returns to the groove 471, and is abutted against the groove wall of the groove 471 through the sealing piece 483 on the sealing block 482 to seal the threaded groove again, and the flow-out of the experimental liquid is avoided when the next measurement is facilitated.
The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all under the inventive concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.
Claims (10)
1. A teaching device for fluid mechanics experiments, comprising:
the bottom wall of the base is provided with rollers;
the liquid supply device is arranged on the base and is used for providing experimental liquid;
a measurement assembly disposed on the base;
one end of the return pipe assembly is connected with the liquid supply device, the other end of the return pipe assembly is detachably connected with the measuring assembly, and the liquid supply device is communicated with the measuring assembly through the return pipe assembly;
one end of the first experiment tube and one end of the second experiment tube are communicated with the liquid supply device through communicating pieces, and the other ends of the first experiment tube and the second experiment tube are communicated with the measuring assembly;
the display module is arranged on the liquid supply device and is electrically connected with the measuring assembly;
wherein the coefficient of friction of the inner pipe wall of the first test tube is less than the coefficient of friction of the inner pipe wall of the second test tube.
2. Teaching device for fluid mechanics experiments according to claim 1, characterized in that said liquid supply device comprises:
the water tank is arranged on the base and used for storing experimental liquid;
the centrifugal pump is arranged on the water tank, a water pumping port of the centrifugal pump is connected with the water tank through a water pumping pipe, a water delivery port of the centrifugal pump is provided with a water delivery pipe, and the communicating piece is respectively communicated with the water delivery pipe, the first experiment pipe and the second experiment pipe;
and the overflow valve is arranged on the water tank and is respectively communicated with the centrifugal pump and the water tank.
3. Teaching device for fluid mechanics experiments according to claim 1, characterized in that said measuring assembly comprises:
the supporting column is arranged on the base;
the second measuring box is arranged between the first measuring box and the supporting column and is respectively connected with the first measuring box and the supporting column, the first measuring box is connected with the second measuring box through a connecting piece, the first measuring box is communicated with the first experiment tube, and the second measuring box is communicated with the second experiment tube;
the first measuring box and the second measuring box are respectively provided with a liquid level sensor;
the first experiment pipe and the second experiment pipe are both provided with a temperature sensor and a water rotor flow meter;
the liquid level sensor, the temperature sensor and the water rotor flow meter are all electrically connected with the display module.
4. Teaching device for fluid mechanics experiments according to claim 3, characterized in that: the first measuring box and the second measuring box are made of transparent materials.
5. Teaching device for fluid mechanics experiments according to claim 3, characterized in that: the first measuring box and the second measuring box are respectively provided with a threaded through hole, a plugging assembly and a flow guide seat, and the flow guide seat is used for guiding liquid in the first measuring box or the second measuring box to flow to the threaded through hole; the thread through hole is provided with a groove, and the plugging component is arranged at the groove.
6. The teaching device for the hydromechanical experiment of claim 5, wherein the lost circulation assembly comprises: the sealing device comprises an elastic piece and a sealing block, wherein one end of the elastic piece is connected with the groove wall of the groove, the other end of the elastic piece is connected with the sealing block, a sealing piece is sleeved on the sealing block, and the sealing piece is abutted to the groove wall of the groove.
7. Teaching apparatus for fluid mechanics experiments according to claim 2, characterized in that: the return pipe assembly comprises a flexible hose and a threaded pipe, one end of the flexible hose is communicated with the water tank, and the other end of the flexible hose is communicated with the threaded pipe; one end of the threaded pipe, which is far away from the telescopic hose, is provided with a notch.
8. Teaching apparatus for fluid mechanics experiments according to claim 1, characterized in that: first experiment pipe and all be provided with adjusting valve on the second experiment pipe.
9. Teaching device for fluid mechanics experiments according to claim 1, characterized in that: the display module is a display screen.
10. Teaching apparatus for fluid mechanics experiments according to claim 1, characterized in that: the difference D between the inner pipe wall friction coefficient of the first experimental pipe and the inner pipe wall friction coefficient of the second experimental pipe is in the range of 0.01-0.06.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222297981.3U CN218241164U (en) | 2022-08-30 | 2022-08-30 | Teaching device for hydrodynamics experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222297981.3U CN218241164U (en) | 2022-08-30 | 2022-08-30 | Teaching device for hydrodynamics experiment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218241164U true CN218241164U (en) | 2023-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222297981.3U Active CN218241164U (en) | 2022-08-30 | 2022-08-30 | Teaching device for hydrodynamics experiment |
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| CN (1) | CN218241164U (en) |
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2022
- 2022-08-30 CN CN202222297981.3U patent/CN218241164U/en active Active
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