CN206040067U - Modified frictional head loss experimental apparatus - Google Patents
Modified frictional head loss experimental apparatus Download PDFInfo
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- CN206040067U CN206040067U CN201620714114.7U CN201620714114U CN206040067U CN 206040067 U CN206040067 U CN 206040067U CN 201620714114 U CN201620714114 U CN 201620714114U CN 206040067 U CN206040067 U CN 206040067U
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Abstract
The utility model discloses a modified frictional head loss experimental apparatus, include test bench, storage water tank, water pump, water injection case, follow journey experimental facility, flood peak test test tube, outlet valve door and return water pipe, still include flood peak measuring head, capacitanc level sensor and converting circuit and liquid crystal display, flood peak test in vitro is located to the flood peak measuring head, and the upper end and the capacitanc level sensor of flood peak measuring head are connected, and capacitanc level sensor and converting circuit and liquid crystal display are connected, and the flood peak measuring head is capacitance level gauge. Compared with the prior art, the beneficial effects of the utility model are that: actual operation nature is strong, degree of automation is high, adopt the electron to gather the reading, and can effective solution rely on naked eye and ruler reading and the problem that the data precision is not high that wastes time and energy can be assembled in teaching place such as schools on a large scale in the past.
Description
Technical field
This utility model is related to a kind of improved frictional head loss experimental provision.
Background technology
In existing frictional head loss experiment device for teaching, the measurement amount of the loss of flood peak is according to the water in journey differential manometer
Post difference in height is represented, and carries out the measurement of water-column using ruler.
Existing frictional head loss experiment device for teaching in use, can produce following problem：1. ruler amount is utilized
It is to keep realization parallel with concave meniscus lowest point to survey water-column, but human eye observation can produce error in practice；2. due to reality
Test the state that water in constituting is continuous flowing, the water-column in differential manometer constantly fluctuates, be unfavorable for reading compared with
Mean values exactly；3., when the position for needing to measure is more, needs take a significant amount of time and carry out reading, and conventional efficient is low.
Utility model content
It is there is error for above-mentioned prior art measurement that this utility model needs the problem for solving, it is bothersome arduously not
Foot, and a kind of improved frictional head loss experimental provision for facilitating determination experiment data is provided.
For solving above-mentioned technical problem, the technical solution adopted in the utility model is：
A kind of improved frictional head loss experimental provision, including testing stand, storage tank, water pump, water injecting tank, along journey test
Pipeline, head test tube, flowing water Valve and water return pipeline；Water injecting tank be connected along journey experimental channel, along journey experimental channel
At least two head test tubes are connected with side by side, along the tail end connection flowing water Valve of journey experimental channel, along journey experimental channel
Water returned in storage tank by water return pipeline, the water in storage tank is pumped in water injecting tank by water pump, also including head test
Head, capacitance level transducer and change-over circuit and LCDs, head measuring head in head test tube, survey by head
The upper end of examination head is connected with capacitance level transducer, and capacitance level transducer is connected with change-over circuit and LCDs,
Head measuring head is capacitance level gauge.
Water injecting tank and inlet valve is provided between journey experimental channel.
Water return pipeline linking is provided with open bulb at journey experimental channel.
Dividing plate A and dividing plate B is provided with water injecting tank, and water injecting tank tank wall is higher than dividing plate A, and dividing plate A is higher than dividing plate B, dividing plate A
Water injecting tank is divided into into I Room and II Room, II Room is divided into III Room and IV Room by dividing plate B, and the cavity between dividing plate A and dividing plate B is III
Room, the water injection pipe being connected with water pump are located at III Room bottom, are connected to IV Room side wall along journey experimental channel.
Overflow pipe is connected between water injecting tank and storage tank separately, overflow pipe is connected to I Room bottom.
Flow meter is provided with along journey experimental channel.
Compared with prior art, the beneficial effects of the utility model are：Using capacitance level transducer in differential manometer
Water-column measured, the accuracy of data of can going bail for, improve conventional efficient, facilitate the arrangement of later experiments data,
Actual operation is strong, high degree of automation, using electron collection reading, can effectively solving in the past by naked eyes and ruler reading
Waste time and energy the not high problem of data precision, can be assemblied in the places to operate schools such as school on a large scale.
Description of the drawings
Fig. 1 is the structural representation of improved frictional head loss experimental provision of the present utility model；
Fig. 2 is the close-up schematic view of F in Fig. 1.
Wherein, 1- water injecting tanks, 2- along journey experimental channel, 3- water return pipelines, 4- head measuring heads, 5- head test tubes,
6- capacitance level transducers, 7- change-over circuits and LCDs, 8- water pumps, 9- storage tanks, 10- flowing water Valves.
Specific embodiment
This utility model is described in further detail presently in connection with accompanying drawing.These accompanying drawings are simplified schematic diagram,
Basic structure of the present utility model is only illustrated in a schematic way, therefore which only shows the composition relevant with this utility model.
As shown in Figure 1-2, a kind of improved frictional head loss experimental provision, including testing stand, storage tank, water pump, note
Water tank, along journey experimental channel, head test tube, flowing water Valve and water return pipeline；Water injecting tank be connected along journey experimental channel, edge
It is connected with least two head test tubes on journey experimental channel side by side, along the tail end connection flowing water Valve of journey experimental channel, edge
Water in journey experimental channel is returned in storage tank by water return pipeline, realizes water circulation utilization, and using water wisely, in storage tank
Water pumped in water injecting tank by water pump, also including head measuring head, capacitance level transducer and change-over circuit and liquid crystal
Display screen, in head test tube, the upper end of head measuring head is connected head measuring head with capacitance level transducer, electric capacity
Formula liquid level sensor is connected with change-over circuit and LCDs, and head measuring head is capacitance level gauge.
Water injecting tank and inlet valve is provided between journey experimental channel.
Water return pipeline linking is provided with open bulb at journey experimental channel.
Dividing plate A and dividing plate B is provided with water injecting tank, and water injecting tank tank wall is higher than dividing plate A, and dividing plate A is higher than dividing plate B, dividing plate A
Water injecting tank is divided into into I Room and II Room, II Room is divided into III Room and IV Room by dividing plate B, and the cavity between dividing plate A and dividing plate B is III
Room, the water injection pipe being connected with water pump are located at III Room bottom, are connected to IV Room side wall along journey experimental channel.
Overflow pipe is connected between water injecting tank and storage tank separately, overflow pipe is connected to I Room bottom.
Flow meter is provided with along journey experimental channel.
Specifically used method is as follows：
Turn on the power, 7 reading of calibration conversion circuit and LCDs, then open water pump 8, from water filling in storage tank 9
Water-filling in case 1, when water level reaches and crosses the height of 1 median septum B of water injecting tank, begins to flow into along journey experimental channel 2, treats that current are steady
After fixed, start to read the reading of the corresponding change-over circuit of each measuring point and LCDs 7, take reading total water at each measuring point
Head.Uninterrupted is adjusted by 10 aperture of adjusting water outlet valve, outflow can be obtained by flow meter, in can be convenient point
Relation between analysis flow and frictional head loss.
Operation principle of the present utility model is as follows：By arranging head measuring point everywhere along journey experimental channel, by measuring pointiPlace
Flow velocity and pressure head be converted into the water-column under hydrostaticH i ,H i Measuring point is representediThe gross head at place.Try in head test
Capacitance level transducer is placed with pipe, head height can be converted to electronic signal, via change-over circuit in LCDs
On show corresponding readings N i , arranged by adjusting circuit, can be causedN i =H i , thus can easily draw measuring pointiThat what is located is total
Head.The distance being aware of between adjacent two measuring pointl i , and corresponding gross headH i 、H i+1 , hydraulic slope can be calculated by following formulaJ：
J=（H i+1 -H i ）/l i ；
Capacitance level transducer is changed with the change of fluid to be measured liquid level using the area coverage of two electrode of sensor,
So as to the relation for causing electric consumption change carries out level gauging.
The change of non electrical quantity is converted to existing capacitance level transducer the change of capacitance, it would be desirable to data message
Change, it is possible to carry out further mass data using computer and process and calculating.Have further the advantage that simultaneously：1. sensitive
Degree is high；2. simple structure；3. small volume；4. dynamic response is good；5. high frequency characteristics is good；6. can work compared with adverse circumstances.
With it is above-mentioned according to desirable embodiment of the present utility model as enlightenment, by above-mentioned description, related work people
Member can carry out various change and modification completely in the range of without departing from this utility model technological thought.This reality
The content being not limited to new technical scope in description, it is necessary to determine its technology according to right
Property scope.
Claims (6)
1. a kind of improved frictional head loss experimental provision, including testing stand, storage tank, water pump, water injecting tank, along journey experiment tube
Road, head test tube, flowing water Valve and water return pipeline；Water injecting tank be connected along journey experimental channel, along journey experimental channel simultaneously
Row is connected with least two head test tubes, along the tail end connection flowing water Valve of journey experimental channel, along journey experimental channel
Water is returned in storage tank by water return pipeline, and the water in storage tank is pumped in water injecting tank by water pump, it is characterised in that：Also include
Head measuring head, capacitance level transducer and change-over circuit and LCDs, head measuring head are located at head test tube
Interior, the upper end of head measuring head is connected with capacitance level transducer, capacitance level transducer and change-over circuit and liquid crystal
Display screen connects, and head measuring head is capacitance level gauge.
2. improved frictional head loss experimental provision according to claim 1, it is characterised in that：Water injecting tank with along journey reality
Test.
3. improved frictional head loss experimental provision according to claim 1, it is characterised in that：Water return pipeline is connected edge
Open bulb is provided with journey experimental channel.
4. improved frictional head loss experimental provision according to claim 1, it is characterised in that：Be provided with water injecting tank every
Water injecting tank is divided into I Room and II Room higher than dividing plate A, dividing plate A higher than dividing plate B, dividing plate A by plate A and dividing plate B, water injecting tank tank wall,
II Room is divided into III Room and IV Room by dividing plate B, and the cavity between dividing plate A and dividing plate B is III Room, and the water injection pipe being connected with water pump is set
In III Room bottom, IV Room side wall is connected to along journey experimental channel.
5. improved frictional head loss experimental provision according to claim 4, it is characterised in that：Water injecting tank and storage tank
Between be separately connected with overflow pipe, overflow pipe is connected to I Room bottom.
6. improved frictional head loss experimental provision according to claim 4, it is characterised in that：Along journey experimental channel
It is provided with flow meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620714114.7U CN206040067U (en) | 2016-07-07 | 2016-07-07 | Modified frictional head loss experimental apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620714114.7U CN206040067U (en) | 2016-07-07 | 2016-07-07 | Modified frictional head loss experimental apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206040067U true CN206040067U (en) | 2017-03-22 |
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ID=58310734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620714114.7U Expired - Fee Related CN206040067U (en) | 2016-07-07 | 2016-07-07 | Modified frictional head loss experimental apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206040067U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112461533A (en) * | 2020-11-25 | 2021-03-09 | 扬州大学 | Door flap head loss experiment testing system and using method thereof |
-
2016
- 2016-07-07 CN CN201620714114.7U patent/CN206040067U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112461533A (en) * | 2020-11-25 | 2021-03-09 | 扬州大学 | Door flap head loss experiment testing system and using method thereof |
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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: 20170322 Termination date: 20200707 |
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| CF01 | Termination of patent right due to non-payment of annual fee |