CN207458435U - Fluid flow resistance and flow measurement self assembly experimental provision - Google Patents
Fluid flow resistance and flow measurement self assembly experimental provision Download PDFInfo
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- CN207458435U CN207458435U CN201720459979.8U CN201720459979U CN207458435U CN 207458435 U CN207458435 U CN 207458435U CN 201720459979 U CN201720459979 U CN 201720459979U CN 207458435 U CN207458435 U CN 207458435U
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Abstract
The utility model is related to fluid flow resistance and flow measurement self assembly experimental provisions, by injecting water in water tank, close first, second, third, fourth index combustion fan, open the first switch valve, the second switch valve, the 3rd switch valve, the 5th index combustion fan, power on, start centrifugal pump, after centrifugal pump stability of rotation, first, second, third, fourth index combustion fan is opened to maximum, pipeline is exhausted；It is then shut off the first switch valve, the second switch valve, the 3rd switch valve, and close first, second, third, fourth index combustion fan, inverted U pipe differential manometer returns to zero, and proceeds by local straight tube drag losses test, the test of straight tube drag losses and flowmeter correction experiment；The beneficial effects of the utility model are：It can realize that local straight tube drag losses test, the test of straight tube drag losses and flowmeter correction experiment, ease of assembly enrich the content of education.
Description
Technical field
The utility model is related to the fluid flow resistance being related in Experimental Teaching of Chemical Engineering Principles and flow measurement self assembly are real
Experiment device.
Background technology
Experiment of Principles of Chemical Engineering is the profession basis required course of chemical industry and nearly chemical industry relevant speciality, belongs to engineering experiment scope,
With significant engineering characteristic.Each experimental project is equivalent to a unit operation in Chemical Manufacture, can be built by experiment
Certain concept of engineering is erected, and fluid flow resistance and flow measurement experiment are one of links important in the course teaching.
But previous experiment is carried out in fixed equipment, the content tested is less, and student only focuses on experimental data again
Test and data processing, the analysis of experimental phenomena and the discussion of experimental result, design principle, each component of experiment to experimental facilities
Selection, the culture of the abilities such as installation, debugging of experimental provision is short of.It is therefore desirable to design a kind of experimental provision, allow
Experimenter can select straight tube, not different types of valve, the similar shape of different tube diameters, different tube wall surface roughness and unlike material
The flowmeter of formula is tested, to enrich experiment test content；By the comparison to a variety of data, deepen the reason to knowwhy
Solution；The chance for installing engineering pipeline of starting is provided to student again simultaneously, with the manipulative ability and Engineering Ideas of training student.
The content of the invention
The purpose of this utility model is to be directed to more than shortcoming, provides a kind of fluid flow resistance and flow measurement certainly
Experimental provision is assembled, is enriched the content of education.
Scheme is used by the utility model solves technical problem：A kind of fluid flow resistance and flow measurement self assembly
Experimental provision, including a water tank, the water tank bottom is provided with discharge outlet, water transport port and water inlet, and the water transport port is communicated with one
Connecting line, arrival end to the port of export of the connecting line be disposed with inlet adjustment valve, centrifugal pump, temperature sensor and
Turbine flowmeter, the output terminal of the turbine flowmeter are also communicated with the first connecting branch road, the second connecting branch road, the 3rd company
Bye-pass and a bypass conduit are connect, first, second, and third connecting branch road is respectively equipped with a first outlet regulating valve, second
Index combustion fan and the 3rd index combustion fan, bypass conduit are equipped with the 4th index combustion fan；First, second, and third connection
The port of export of bye-pass is connected, and with local straight tube drag losses test pipeline, straight tube drag losses test pipeline and
Flowmeter correction pipeline is connected, and arrival end to the port of export of the part straight tube drag losses test pipeline is disposed with the
One switch valve, near-end pressure difference test valve, local resistance test valve and distal end pressure difference test valve；The straight tube drag losses test
The arrival end of pipeline to the port of export is disposed with the second switch valve, the first pressure difference test valve and the second pressure difference test valve；Institute
Arrival end to the port of export for stating flowmeter correction pipeline is disposed with the 3rd pressure difference test valve, Venturi meter and the 4th pressure
Difference test valve；Near-end pressure difference test valve and distal end pressure difference test valve, the first pressure difference test valve and the second pressure difference test valve, the
Three pressure differences test valve and the 4th pressure difference test valve is each connected with two test leads of inverted U pipe differential manometer；The inverted U pipe
The pressure value of two test lead outputs of differential manometer is connected through pressure transmitter with main control end；The part straight tube drag losses is surveyed
The port of export on test tube road, straight tube drag losses test pipeline and flowmeter correction pipeline is connected through an outlet pipeline with water tank；
The outlet pipeline is equipped with the 5th index combustion fan.
Further, the second connecting branch road and the 3rd connecting branch road are located at second outlet regulating valve and the 3rd and go out
The rear end of mouth regulating valve further respectively has one second spinner flowmeter and third trochanter flowmeter.
Further, the interior gauge for being equipped with to measure water of the water tank.
Further, the port of export of the bypass conduit is connected with the water inlet of water tank.
Further, the discharge outlet of the water tank is also associated with a drainpipe, and the drainpipe is equipped with a drain valve.
Further, one is further included for fixing the fixed frame of component in self assembly experimental provision, the water tank, connection
Pipeline, the first connecting branch road, the second connecting branch road, the 3rd connecting branch road, bypass conduit, local straight tube drag losses are surveyed
Test tube road, straight tube drag losses test pipeline and flowmeter correction pipeline may be contained on the fixed frame.
Further, the main control end includes a PLC controller and the LCD display being electrically connected with the PLC controller,
The LCD display is arranged on the fixed frame.
Compared with prior art, the utility model has following advantageous effect：By regulating water flow, can realize local straight
The test of pipe drag losses, the test of straight tube drag losses and flowmeter correction experiment, each building block ease of assembly are enriched in teaching
Hold.
Description of the drawings
The utility model patent is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the structure diagram of the utility model embodiment.
In figure：
1- gauges；2- water tanks；3- inlet adjustment valves；4- centrifugal pumps；5- temperature sensors；6- turbine flowmeters；7-
Four index combustion fans；8- first outlet regulating valves；9- second outlet regulating valves；The 3rd index combustion fans of 10-；11- the first rotors
Flowmeter；The second spinner flowmeters of 12-；The first switch valves of 13-；The second switch valves of 14-；The 3rd switch valves of 15-；16-
Valve is tested in local resistance；The first near-ends of 17- pressure difference tests valve；The second near-ends of 18- pressure difference tests valve；The first distal ends of 19- pressure difference is surveyed
Try valve；The second distal ends of 20- pressure difference test valve, 21- straight tubes drag losses test pipeline；The first pressure differences of 22- test valve；23- second
Pressure difference tests valve；24- Venturi meters；The 3rd pressure differences of 25- test valve；The 4th pressure differences of 26- test valve；27- the 5th is adjusted outlet
Save valve；28- pressure difference transmitters；29- inverted U pipe differential manometers；30- connecting lines；The first connecting branches of 31- road；32- second is connected
Bye-pass；The 3rd connecting branch roads of 33-；34- bypass conduits；35- part straight tubes drag losses tests pipeline；36- outlet pipelines；
37- drainpipes；38- drain valves；39- flowmeters correct pipeline；40- fixed frames.
Specific embodiment
The utility model is further illustrated with reference to the accompanying drawings and detailed description.
As shown in Figure 1, a kind of fluid flow resistance of the present embodiment and flow measurement self assembly experimental provision, including a water
Case 2,2 bottom of water tank are provided with discharge outlet, water transport port and water inlet, and the water transport port is communicated with a connecting line 30, described
The arrival end of connecting line 30 to the port of export is disposed with inlet adjustment valve 3, centrifugal pump 4, temperature sensor 5 and turbine flow
Meter 6, the output terminal of the turbine flowmeter 6 are also communicated with the first connecting branch road 31, the connection of the second connecting branch road the 32, the 3rd
33 and one bypass conduit 34 of bye-pass is respectively equipped with a first outlet regulating valve on first, second, and third connecting branch road 33
8th, 9 and the 3rd index combustion fan 10 of second outlet regulating valve, bypass conduit 34 are equipped with the 4th index combustion fan 7；Firstth,
Two are connected with the port of export on the 3rd connecting branch road 33, and are hindered with local straight tube drag losses test pipeline 35, straight tube
Power loss test pipeline 21 is connected with flowmeter correction pipeline 39, the entrance of the part straight tube drag losses test pipeline 35
End to the port of export is disposed with the first switch valve 13, near-end pressure difference test valve, local resistance test valve 16 and distal end pressure difference
Test valve；Arrival end to the port of export of straight tube drag losses test pipeline 21 is disposed with the second switch valve 14, the
One pressure difference test valve 22 and second pressure difference test valve 23；Arrival end to the port of export of the flowmeter correction pipeline 39 is set gradually
There are the 3rd pressure difference test valve 25,24 and the 4th pressure difference of Venturi meter test valve 26；The near-end pressure difference test valve and distal end
Pressure difference test valve, the first pressure difference test valve 22 and second pressure difference test valve 23, test valve 25 and the 4th pressure difference test of the 3rd pressure difference
Valve 26 is each connected with two test leads of inverted U pipe differential manometer 29；Described 29 two test lead outputs of inverted U pipe differential manometer
Pressure value be connected through pressure transmitter with main control end；The part straight tube drag losses test pipeline 35, straight tube resistance damage
The port of export for losing test pipeline 21 and flowmeter correction pipeline 39 is connected through an outlet pipeline 36 with water tank 2；The outlet pipe
Road 36 is equipped with the 5th index combustion fan 27.
From the foregoing, the beneficial effects of the utility model are：Pass through first, second, third and fourth outlet regulating
The adjustment of valve 7 input to local straight tube drag losses test pipeline 35, straight tube drag losses test pipeline 21 and flowmeter corrects pipe
Water flow in road 39, open respectively first, second, and third switch valve 15 realize the test to local straight tube drag losses,
The test of straight tube drag losses and the experiment of flowmeter correction；And quickly connected using clip chuck between the utility model pipeline
It connects, easy assembly and disassembly.I.e. connecting line 30 is connected with first, second, and third connecting branch road 33 using clip chuck,
First, second, and third connecting branch road 33 and straight tube drag losses test pipeline 21, straight tube drag losses test pipeline 21 and
Flowmeter correction pipeline 39 is quickly connected using clip chuck.The near-end pressure difference test valve is arranged at local resistance including two
Test the first near-end pressure difference test valve 17 and second near-end pressure difference test valve 18 of 16 both sides near-end of valve；The distal end pressure difference test
Valve includes two the first distal end pressure difference test 19 and second distal end pressure differences of valve for being arranged at 16 both sides distal end of local resistance test valve
Test valve 20.Two test leads of the inverted U pipe differential manometer 29 test valve and distal end pressure difference test valve with near-end pressure difference respectively
Signal output part be connected, also the signal output part respectively with the first pressure difference test valve 22 and second pressure difference test valve 23 is connected,
Signal output part also respectively with the 3rd pressure difference test valve 25 and the 4th pressure difference test valve 26 is connected respectively；Inverted U pipe differential manometer
29 correct pipeline 39 for measuring straight tube drag losses test pipeline 21, straight tube drag losses test pipeline 21 and flowmeter respectively
Arrival end and the port of export pressure difference, when testing a wherein pipeline pressure difference, the valve of other two testing tube road, which corresponds to, closes.
In the present embodiment, 32 and the 3rd connecting branch road 33 of the second connecting branch road is located at second outlet regulating valve
9 and the 3rd the rear end of index combustion fan 10 further respectively have one second spinner flowmeter 11 and third trochanter flowmeter 12.Pass through
Second spinner flowmeter 11 and the display of third trochanter flowmeter 12 calculate the second connecting branch road 32, the 3rd connecting branch road 33
Flow.
In the present embodiment, the interior gauge 1 for being equipped with to measure water of the water tank 2.Water tank is calculated by gauge 1
Water variation in 2 carries out flowmeter correction experiment.
In the present embodiment, the port of export of the bypass conduit 34 is connected with the water inlet of water tank 2.Pass through bypass conduit
34 are shunted, and preferably control water flow.
In the present embodiment, the discharge outlet of the water tank 2 is also associated with a drainpipe 37, and the drainpipe 37 is equipped with one
Drain valve 38.The draining for carrying out water tank 2 is controlled by drain valve 38.
In the present embodiment, one is further included for fixing the fixed frame 4040 of component in self assembly experimental provision, it is described
Water tank 2, connecting line 30, the first connecting branch road 31, the second connecting branch road 32, the 3rd connecting branch road 33, bypass conduit
34th, local straight tube drag losses test pipeline 35, straight tube drag losses test pipeline 21 and flowmeter correction pipeline 39 are respectively provided with
In on the fixed frame 4040.Valve in above each pipeline and measuring instrument are installed in fixed frame 4040
On, teaching is facilitated to show.Test equipment include temperature sensor 5, centrifugal pump 4, turbine flowmeter 6, Venturi meter 24, fall
U-tube differential manometer 29 and pressure difference transmitter 28；Valve includes the first, second, third, fourth, the 5th index combustion fan 27, the
First, second, third switch valve 15 and first, second, third and fourth pressure difference test valve 26 etc..
In the present embodiment, the LCD that the main control end includes a PLC controller and is electrically connected with the PLC controller is shown
Display screen, the LCD display are arranged on the fixed frame 4040.Each test parameter is shown by LCD display, and
PLC controller is connected with valve and measuring instrument, and realization automatically controls.
The specific implementation process of the present embodiment：
Water is injected in water tank 2 first, closes first, second, third, fourth index combustion fan 7, opens the first switching valve
Door the 13, second switch valve 14, the 3rd switch valve 15, the 5th index combustion fan 27, power on, start centrifugal pump 4, treat from
After 4 stability of rotation of heart pump, first, second, third, fourth index combustion fan 7 is opened to maximum, pipeline is exhausted；Then
The first switch valve 13, the second switch valve 14, the 3rd switch valve 15 are closed, and closes first, second, third, fourth
Index combustion fan 7, inverted U pipe differential manometer 29 return to zero, and proceed by local straight tube drag losses test, the test of straight tube drag losses
It corrects and tests with flowmeter；
The part straight tube drag losses test is specific as follows：
The first switch valve 13, standard-sized sheet local resistance test valve 16 are opened, and opens local straight tube drag losses test
Near-end pressure difference test valve and distal end pressure difference test valve on pipeline 35；Opening the 4th index combustion fan 7 makes the portion exported in water tank 2
Divide moisture stream, second outlet regulating valve 9 is slowly opened to 1000L/h, record and is flowed in local straight tube drag losses test pipeline 35
Amount, temperature, near-end pressure difference and distal end pressure difference；By 9 regulation flow process of second outlet regulating valve, obtain respectively local under different flow
Straight tube drag losses tests flow, temperature, near-end pressure difference and the distal end pressure difference of pipeline 35；And it is recorded；It is hindered in local straight tube
On power loss test pipeline 35, near-end differential pressure measurement point and distal end differential pressure measurement point are installed, by the near-end pressure difference surveyed and
Distal end pressure difference eliminates the error that local straight tube drag losses is brought.
The test of straight tube drag losses is specific as follows：
The second switch valve of valve 14 is opened, opens the first pressure difference test valve 22 on straight tube drag losses test pipeline 21
Valve 23 is tested with the second pressure difference；It is adjusted by first, second, third and fourth index combustion fan 7 by flow from more than 1000L/h
It is sectional-regulated to 100L/h；Flow value, temperature value and the pressure difference of each flow lower straighttube drag losses test pipeline 21 are obtained,
And it is recorded；
Flowmeter correction experiment is specific as follows：
The 3rd switch valve 15 is opened, turn-on flow rate meter corrects the 3rd pressure difference test 25 and the 4th pressure difference of valve on pipeline 39
Test valve 26 and Venturi meter 24；Flow is adjusted by first, second, third and fourth index combustion fan 7, passes through water
Gauge 1 in case 2 obtains the fluid change of water tank 2 and the flow value of Venturi meter 24, calibrated flow meter correction pipe
The pressure difference and temperature on road 39, and recorded.
In conclusion a kind of fluid flow resistance provided by the utility model and flow measurement self assembly experimental provision and its
Application method, it is easy to assembly, facilitate classroom instruction, and the content of courses is enriched, it has great application prospect.
Above-listed preferred embodiment has been further described the purpose of this utility model, technical solution and advantage,
It should be understood that the above is only the preferred embodiment of the utility model only, it is not intended to limit the utility model, it is all
Within the spirit and principles of the present invention, any modifications, equivalent replacements and improvements are made should be included in this practicality
Within new protection domain.
Claims (7)
1. a kind of fluid flow resistance and flow measurement self assembly experimental provision, it is characterised in that：Including a water tank, the water tank
Bottom is provided with discharge outlet, water transport port and water inlet, and the water transport port is communicated with a connecting line, the arrival end of the connecting line
Be disposed with inlet adjustment valve, centrifugal pump, temperature sensor and turbine flowmeter to the port of export, the turbine flowmeter it is defeated
Outlet is also communicated with the first connecting branch road, the second connecting branch road, the 3rd connecting branch road and a bypass conduit, and first,
Two and the 3rd connecting branch road is respectively equipped with a first outlet regulating valve, second outlet regulating valve and the 3rd index combustion fan,
Bypass conduit is equipped with the 4th index combustion fan；The port of export on first, second, and third connecting branch road is connected, and with
Local straight tube drag losses test pipeline, straight tube drag losses test pipeline are connected with flowmeter correction pipeline, the part
Arrival end to the port of export of straight tube drag losses test pipeline is disposed with the first switch valve, near-end pressure difference test valve, office
Portion's resistance measurement valve and distal end pressure difference test valve；Arrival end to the port of export of the straight tube drag losses test pipeline is set gradually
There are the second switch valve, the first pressure difference test valve and the second pressure difference test valve；The arrival end of flowmeter correction pipeline is to going out
Mouth end is disposed with the 3rd pressure difference test valve, Venturi meter and the 4th pressure difference test valve；The near-end pressure difference tests valve
With distal end pressure difference test valve, the first pressure difference test valve and the second pressure difference test valve, the 3rd pressure difference test valve and the test of the 4th pressure difference
Valve is each connected with two test leads of inverted U pipe differential manometer；The pressure value of the two test lead output of inverted U pipe differential manometer
It is connected through pressure transmitter with main control end；The part straight tube drag losses test pipeline, straight tube drag losses test pipeline
It is connected with the port of export of flowmeter correction pipeline through an outlet pipeline with water tank；The outlet pipeline is equipped with the 5th outlet and adjusts
Save valve.
2. fluid flow resistance according to claim 1 and flow measurement self assembly experimental provision, it is characterised in that：It is described
Second connecting branch road and the 3rd connecting branch road are located at second outlet regulating valve and the rear end of the 3rd index combustion fan is also distinguished
Equipped with one second spinner flowmeter and third trochanter flowmeter.
3. fluid flow resistance according to claim 1 and flow measurement self assembly experimental provision, it is characterised in that：It is described
The interior gauge for being equipped with to measure water of water tank.
4. fluid flow resistance according to claim 1 and flow measurement self assembly experimental provision, it is characterised in that：It is described
The port of export of bypass conduit is connected with the water inlet of water tank.
5. fluid flow resistance according to claim 1 and flow measurement self assembly experimental provision, it is characterised in that：It is described
The discharge outlet of water tank is also associated with a drainpipe, and the drainpipe is equipped with a drain valve.
6. fluid flow resistance according to claim 1 and flow measurement self assembly experimental provision, it is characterised in that：Also wrap
One is included for fixing the fixed frame of component in self assembly experimental provision, the water tank, connecting line, the first connecting branch road,
Second connecting branch road, the 3rd connecting branch road, bypass conduit, local straight tube drag losses test pipeline, straight tube drag losses
Test pipeline and flowmeter correction pipeline may be contained on the fixed frame.
7. fluid flow resistance according to claim 6 and flow measurement self assembly experimental provision, it is characterised in that：It is described
Main control end includes a PLC controller and the LCD display being electrically connected with the PLC controller, and the LCD display is arranged at institute
It states on fixed frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720459979.8U CN207458435U (en) | 2017-04-28 | 2017-04-28 | Fluid flow resistance and flow measurement self assembly experimental provision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720459979.8U CN207458435U (en) | 2017-04-28 | 2017-04-28 | Fluid flow resistance and flow measurement self assembly experimental provision |
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| Publication Number | Publication Date |
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| CN207458435U true CN207458435U (en) | 2018-06-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106935125A (en) * | 2017-04-28 | 2017-07-07 | 福州大学 | Fluid flow resistance and flow measurement self assembly experimental provision and its application method |
-
2017
- 2017-04-28 CN CN201720459979.8U patent/CN207458435U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106935125A (en) * | 2017-04-28 | 2017-07-07 | 福州大学 | Fluid flow resistance and flow measurement self assembly experimental provision and its application method |
| CN106935125B (en) * | 2017-04-28 | 2023-04-07 | 福州大学 | Fluid flow resistance and flow measurement self-assembly experimental device and use method thereof |
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