CN209589422U - A kind of fluid flow resistance measurement device - Google Patents
A kind of fluid flow resistance measurement device Download PDFInfo
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- CN209589422U CN209589422U CN201920614790.0U CN201920614790U CN209589422U CN 209589422 U CN209589422 U CN 209589422U CN 201920614790 U CN201920614790 U CN 201920614790U CN 209589422 U CN209589422 U CN 209589422U
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- water pump
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- 239000012530 fluid Substances 0.000 title claims abstract description 34
- 238000005259 measurement Methods 0.000 title claims abstract description 19
- 238000012360 testing method Methods 0.000 claims abstract description 115
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 100
- 238000003825 pressing Methods 0.000 claims abstract description 7
- 230000003447 ipsilateral effect Effects 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000008685 targeting Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
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Abstract
The utility model discloses a kind of fluid flow resistance measurement devices, include rack, the rack is equipped with electric control box, water storage box, test pipeline and water pump, the water inlet pipe of water pump is connected with water storage box bottom, test pipeline is accessed in water storage box by pipeline again after being connected by pipeline with the outlet pipe of water pump, flowmeter is equipped between test pipeline and the water pump, testing pipeline includes testing tube and two equalizing valves for being set to testing tube both ends, each equalizing valve connects an impulse valve, impulse valve between testing tube and water pump passes through the first pressing water inlet of pipeline cut-in pressure transmitter, impulse valve between testing tube and water storage box passes through the final pressure water inlet of pipeline cut-in pressure transmitter.The fluid resistance test of multiple groups testing tube can be completed by adjusting the opening and closing of inlet valve and impulse valve in the utility model, and can by adjusting water pump and uninterrupted, directly read on the display unit as a result, quickly and easily, error it is small.
Description
Technical field
The utility model relates to laboratory's hydrodynamics testing equipment field, in particular to a kind of fluid flow resistance measurement
Device.
Background technique
When fluid is by the pipe-line system that is made of straight tube, pipe fitting (such as threeway and elbow) and valve etc., due to viscosity
The presence of shear stress and eddy stress will lose certain mechanical energy.Fluid when flowing through straight tube caused mechanical power loss be known as
Straight tube drag losses.Mechanical energy loss caused by changing when fluid passes through pipe fitting, valve because of fluid direction of motion and velocity magnitude
It loses and is known as local resistance loss.
Existing laboratory equipment mostly uses volume and the time of U-shaped pressure difference meter and human metering water to carry out fluid
Measure of resistance test, it is big that there are errors, frequently replace testing tube, it is cumbersome the problems such as, interfere student to smoothly complete and tested
Journey quickly understands test objective, hinders students' practice.
Utility model content
The technical problem to be solved by the utility model is to overcome the deficiencies of existing technologies, a kind of fluid flowing resistance is proposed
Power measurement device adjusts the opening and closing of inlet valve and impulse valve, and the fluid resistance test of multiple groups testing tube can be completed, and can pass through
Adjust water pump and uninterrupted, directly read on the display unit as a result, it is quick and easy, error is small.
The technical solution of the utility model includes:
A kind of fluid flow resistance measurement device, it includes rack, the rack be equipped with electric control box, water storage box,
Test pipeline and water pump, the water inlet pipe of the water pump are connected with water storage box bottom, and the test pipeline passes through pipeline and water pump
Outlet pipe be connected after accessed in water storage box by pipeline again, it is described equipped with flowmeter between test pipeline and the water pump
Test pipeline includes testing tube and two equalizing valves for being set to testing tube both ends, and each equalizing valve connects an impulse valve, position
Impulse valve between testing tube and water pump passes through the first pressing water inlet of pipeline cut-in pressure transmitter, is located at testing tube and water storage
Impulse valve between case passes through the final pressure water inlet of pipeline cut-in pressure transmitter, is equipped with control unit in the electric control box
And display unit, described control unit and water pump, pressure transmitter control connect, the display unit and flowmeter, pressure become
Device signal is sent to connect.
Further, the testing tube is on-way resistance smooth tube, on-way resistance rough pipe or local resistance pipe.
It further, is replaceable structure between the testing tube and its two sides equalizing valve in the test pipeline.
Further, the quantity of the test pipeline is three groups, and the testing tube in three groups of test pipelines is respectively to hinder along journey
Power smooth tube, on-way resistance rough pipe and local resistance tube, three groups of tests pipeline it is in parallel it is parallel with one another after by pipeline with
Water pump is connected with water storage box, and the water inlet end of every group of test pipeline is equipped with inlet valve, draws positioned at ipsilateral three of three groups of testing tubes
Pass through the corresponding water inlet of pipeline cut-in pressure transmitter after pressure valve is in parallel.
Further, threeway is equipped at the water inlet pipe of the water pump, the third interface of the threeway is equipped with thermometer,
The thermometer is connected with the display unit.
Further, the local resistance pipe is made of smooth tube and the gate valve being set in the middle part of smooth tube.
Further, two drainpipes corresponding with first pressing water inlet, final pressure water inlet connect on the pressure transmitter
Enter in water storage box.
Further, the display unit is recording instrument without paper.
Further, the flow is calculated as turbine flowmeter.
Further, the bottom of the water storage box is equipped with drain valve.
Compared with prior art, the utility model will be tested by pressure transmitter, flowmeter, thermometer and display unit
The result of the Fluid Resistance Test measurement of pipe directly displays out, directly reads on the display apparatus, by controlling three groups of tests
Inlet valve and impulse valve on pipeline are realized and individually carry out testing experiment to wherein one group of testing tube, and easy to operate, error is small,
Student can be made to fully understand the test objective of fluid resistance testing experiment during the test, enhanced memory, the dynamic of student is provided
Hand operational capacity；Only be arranged to need replacing testing tube when independent one group of test pipeline, thus testing tube and two sides equalizing valve it
Between connection be necessarily arranged to replaceable structure；Three groups of test pipelines of setting simultaneously, by closing on two of them pipeline
All valves only open all valves on a wherein test pipeline, and the testing tube that can be tested in pipeline the group carries out
Precisely test, easy to operate, targeting accuracy；The temperature of water can be monitored in real time in thermometer, can observe during the test and
Obtain influence of the water temperature to fluid resistance；Fluid resistance can be done further with the size of the gate valve on local resistance pipe
Research；The drainpipe access water storage box of pressure transmitter reuses water.The utility model by adjusting inlet valve and
The fluid resistance test of multiple groups testing tube can be completed in the opening and closing of impulse valve, and can be by adjusting water pump and uninterrupted, directly
Read on the display unit as a result, it is quick and easy, error is small.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model.
Specific embodiment
Specific embodiment of the present utility model is described in detail with reference to the accompanying drawing.
Embodiment 1:
A kind of fluid flow resistance measurement device, as shown in Figure 1, the rack 1 is equipped with electric-controlled it includes rack 1
Case 2 processed, water storage box 3, test pipeline 4 and water pump 5, the water inlet pipe of the water pump 5 are connected with 3 bottom of water storage box, the test
Pipeline 4 is accessed in water storage box 3 by pipeline again after being connected by pipeline with the outlet pipe of water pump 5, the test pipeline 4 and water
Flowmeter 6 is equipped between pump 5, the test pipeline 4 includes testing tube 41 and two equalizing valves for being set to 41 both ends of testing tube
42, each equalizing valve 42 connects an impulse valve 43, and the impulse valve 42 between testing tube 41 and water pump 5 is accessed by pipeline
The first pressing water inlet of pressure transmitter 7, the impulse valve 42 between testing tube 41 and water storage box 3 are become by pipeline cut-in pressure
The final pressure water inlet of device 7 is sent, is equipped with control unit and display unit, described control unit and water pump in the electric control box 2
5, the control of pressure transmitter 7 connection, the display unit are connect with flowmeter 6,7 signal of pressure transmitter.
Further, the testing tube 41 is on-way resistance smooth tube 411, on-way resistance rough pipe 412 or local resistance
Pipe 413.
It further, is replaceable structure between the testing tube 41 and its two sides equalizing valve 42 in the test pipeline 4.
Further, the quantity of the test pipeline 4 is three groups, and the testing tube in three groups of test pipelines 4 is respectively along journey
Resistance smooth tube, on-way resistance rough pipe and local resistance tube pass through pipeline after three groups of test pipelines, 4 parallel connection is parallel with one another
It is connected with water pump 5 and water storage box 3, the water inlet end of every group of test pipeline 4 is equipped with inlet valve 44, and it is ipsilateral to be located at three groups of testing tubes 4
Three 43 parallel connections of impulse valve after pass through the corresponding water inlet of pipeline cut-in pressure transmitter 7.
Further, threeway is equipped at the water inlet pipe of the water pump 5, the third interface of the threeway is equipped with thermometer
8, the thermometer 8 is connected with the display unit.
Further, the local resistance pipe is made of smooth tube and the gate valve 9 being set in the middle part of smooth tube.
Further, two drainpipes corresponding with first pressing water inlet, final pressure water inlet connect on the pressure transmitter 7
Enter in water storage box 3.
Further, the display unit is recording instrument without paper.
Further, the flowmeter 6 is turbine flowmeter.
Further, the bottom of the water storage box 3 is equipped with drain valve 31.
Testing pipeline is three sections of long straight tubes in parallel, respectively for measuring the smooth pipe resistance coefficient of on-way resistance, along journey
The coarse pipe resistance coefficient of resistance, local resistance pipe resistance coefficient, on-way resistance smooth tube use the stainless steel straight tube of inner wall smooth,
On-way resistance rough pipe uses the galvanized pipe of inner wall coarse, and local resistance pipe uses on the stainless steel tube of inner wall smooth plus a lock
The flow of valve, water is measured using turbine flowmeter, and differential pressure signal is passed to no paper using differential pressure transmitter by the resistance of testing tube
Recorder.
Since the material of tubing has difference, thus bore also has difference, we provide corresponding data, for examination
It tests analysis to use, is detailed in following table.
Test process is as follows:
(1) pump startup: first pouring water to water storage box, and tap water direct can be used and connect water, is then shut off outlet valve, knot
Beam is poured water, and general supply and meter switch are opened, and starting water pump slowly reaches outlet valve most after pump motor stability of rotation
Greatly.
(2) test pipeline selection: the test pipeline of Selection experiment opens the inlet valve on the test pipeline, closes another
All valves of outer two-way testing tube road, and under outlet valve maximum opening, keep full flow to flow 5-10min.
(3) it is vented: is clicked at the control unit interface of electric control box " exhaust of impulse room " button, then differential pressure transmitter is real
Now it is vented.
(4) impulse: all valves of corresponding test pipeline are opened, are then clicked at the control unit interface of electric control box
The corresponding data, then differential pressure transmitter detects the pressure difference of the test pipeline.
(5) flow is adjusted: manual state, and the frequency converter output selection 100 of the control unit of electric control box is then turned on
Outlet valve adjusts flow, allow flow from 1 to 4m3/h within the scope of change, test variation 0.5m3/h or so every time.Change stream every time
Amount writes down corresponding pressure difference after flowing and reaching stable；Automatic control state, flow control interface setting flow value or setting become
Frequency device output valve records related data to stability of flow.
(6) it calculates: when device determines, according to the test measured value with u, λ and ξ, under isothermal conditions, Reynolds number can be calculated
Re=du ρ/μ=Au, wherein A be constant, as long as therefore adjust piping flow, the testing site of λ~Re a series of can be obtained, thus
Draw λ~Re curve.
(7) off-test: closing outlet valve, switch off the pump and instrument power, cleaning plant.
Compared with prior art, the utility model will be tested by pressure transmitter, flowmeter, thermometer and display unit
The result of the Fluid Resistance Test measurement of pipe directly displays out, directly reads on the display apparatus, by controlling three groups of tests
Inlet valve and impulse valve on pipeline are realized and individually carry out testing experiment to wherein one group of testing tube, and easy to operate, error is small,
Student can be made to fully understand the test objective of fluid resistance testing experiment during the test, enhanced memory, the dynamic of student is provided
Hand operational capacity；Only be arranged to need replacing testing tube when independent one group of test pipeline, thus testing tube and two sides equalizing valve it
Between connection be necessarily arranged to replaceable structure；Three groups of test pipelines of setting simultaneously, by closing on two of them pipeline
All valves only open all valves on a wherein test pipeline, and the testing tube that can be tested in pipeline the group carries out
Precisely test, easy to operate, targeting accuracy；The temperature of water can be monitored in real time in thermometer, can observe during the test and
Obtain influence of the water temperature to fluid resistance；Fluid resistance can be done further with the size of the gate valve on local resistance pipe
Research；The drainpipe access water storage box of pressure transmitter reuses water.The utility model by adjusting inlet valve and
The fluid resistance test of multiple groups testing tube can be completed in the opening and closing of impulse valve, and can be by adjusting water pump and uninterrupted, directly
Read on the display unit as a result, it is quick and easy, error is small.
Basic principles, main features, and advantages of the present invention has been shown and described above.This reality
It is not restricted to the described embodiments with novel, the above embodiments and description only describe the originals of the utility model
Reason, the utility model also has various changes and improvements on the premise of not departing from the spirit and scope of the utility model, these changes
Change and improvement is both fallen in the range of claimed invention.The utility model requires protection scope is by appended right
Claim and its equivalent define.
Claims (10)
1. a kind of fluid flow resistance measurement device, it is characterised in that: include rack, the rack be equipped with electric control box,
Water storage box, test pipeline and water pump, the water inlet pipe of the water pump are connected with water storage box bottom, and the test pipeline passes through pipeline
It is accessed in water storage box by pipeline and outlet valve after being connected with the outlet pipe of water pump, is set between test pipeline and the water pump again
There is flowmeter, the test pipeline includes testing tube and two equalizing valves for being set to testing tube both ends, and each equalizing valve connects again
An impulse valve is connect, the impulse valve between testing tube and water pump passes through the first pressing water inlet of pipeline cut-in pressure transmitter,
Impulse valve between testing tube and water storage box passes through the final pressure water inlet of pipeline cut-in pressure transmitter, the electrical control
Control unit and display unit are equipped in case, described control unit and water pump, pressure transmitter control connect, the display unit
It is connect with flowmeter, pressure transmitter signal.
2. a kind of fluid flow resistance measurement device as described in claim 1, it is characterised in that: the testing tube is to hinder along journey
Power smooth tube, on-way resistance rough pipe or local resistance pipe.
3. a kind of fluid flow resistance measurement device as claimed in claim 2, it is characterised in that: the survey in the test pipeline
It is replaceable structure between test tube and its two sides equalizing valve.
4. a kind of fluid flow resistance measurement device as claimed in claim 2, it is characterised in that: the quantity of the test pipeline
It is three groups, the testing tube in three groups of test pipelines is respectively on-way resistance smooth tube, on-way resistance rough pipe and local resistance tube,
It is connected by pipeline with water pump and water storage box after three groups of test pipelines are parallel with one another, the water inlet end of every group of test pipeline is set
Have inlet valve, after three impulse valves ipsilateral positioned at three groups of testing tubes are in parallel by pipeline cut-in pressure transmitter it is corresponding enter water
Mouthful.
5. a kind of fluid flow resistance measurement device as described in claim 1, it is characterised in that: at the water inlet pipe of the water pump
Equipped with threeway, the third interface of the threeway is equipped with thermometer, and the thermometer is connected with the display unit.
6. a kind of fluid flow resistance measurement device as claimed in claim 2, it is characterised in that: the local resistance Guan Youguang
Slip pipe and the gate valve being set in the middle part of smooth tube form.
7. a kind of fluid flow resistance measurement device as described in claim 1, it is characterised in that: on the pressure transmitter with
In the corresponding two drainpipes access water storage box of first pressing water inlet, final pressure water inlet.
8. a kind of fluid flow resistance measurement device as described in claim 1, it is characterised in that: the display unit is no paper
Recorder.
9. a kind of fluid flow resistance measurement device as described in claim 1, it is characterised in that: the flow is calculated as turbine flow
Meter.
10. a kind of fluid flow resistance measurement device as described in claim 1, it is characterised in that: the bottom of the water storage box
Equipped with drain valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920614790.0U CN209589422U (en) | 2019-04-30 | 2019-04-30 | A kind of fluid flow resistance measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920614790.0U CN209589422U (en) | 2019-04-30 | 2019-04-30 | A kind of fluid flow resistance measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209589422U true CN209589422U (en) | 2019-11-05 |
Family
ID=68345325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920614790.0U Expired - Fee Related CN209589422U (en) | 2019-04-30 | 2019-04-30 | A kind of fluid flow resistance measurement device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209589422U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111766362A (en) * | 2020-06-30 | 2020-10-13 | 三一汽车制造有限公司 | Detection device, pumping device and detection method of pipe loss parameters |
| CN114674525A (en) * | 2022-03-09 | 2022-06-28 | 广西防城港核电有限公司 | Pipeline flow characteristic verification device and verification method thereof |
-
2019
- 2019-04-30 CN CN201920614790.0U patent/CN209589422U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111766362A (en) * | 2020-06-30 | 2020-10-13 | 三一汽车制造有限公司 | Detection device, pumping device and detection method of pipe loss parameters |
| CN114674525A (en) * | 2022-03-09 | 2022-06-28 | 广西防城港核电有限公司 | Pipeline flow characteristic verification device and verification method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191105 |
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| CF01 | Termination of patent right due to non-payment of annual fee |