CN204926623U - Pipeline frictional head loss experimental apparatus of measurationing with flowmeter - Google Patents
Pipeline frictional head loss experimental apparatus of measurationing with flowmeter Download PDFInfo
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- CN204926623U CN204926623U CN201520516769.9U CN201520516769U CN204926623U CN 204926623 U CN204926623 U CN 204926623U CN 201520516769 U CN201520516769 U CN 201520516769U CN 204926623 U CN204926623 U CN 204926623U
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Abstract
The utility model relates to a laboratory glassware field especially relates to a pipeline frictional head loss experimental apparatus of measurationing with flowmeter. The utility model discloses make the experiment no longer spend more time to remove to measure the bulk volume that flows past in certain time at the intraductal flowmeter that has installed additional of experiment rectal cauda, the time of having practiced thrift, avoided traditional measurement process multiple error, avoided moving about because of and tested the rectal cauda piping and send the fluctuation of outflow end gross head, by bernoulli equation e=z+ (P gamma ) (U22g), thereby U=Qt can know the unstable change of avoiding the pressure -measuring pipe for the pressure -measuring pipe reading is more accurate, and it is lower that the people is experimental error. Fixing just to experiment rectal cauda pipe, vertical installation prevents that it from receiving the fluid action of gravity and producing the rotation.
Description
Technical field
The utility model relates to experimental apparatus field, particularly relates to a kind of pipeline frictional head loss with flowmeter and measures experimental provision.
Background technology
Existing pipeline frictional head loss experiments of measuring causes experimental error bigger than normal due to many reasons on the flow velocity measuring fluid, and experiment step plays very complicated, in experimentation, especially do not consider the error effect of the instability of experiment tube tail-pipe device to experiment.The utility model, by studying existing experimental provision, provides a kind of pipeline frictional head loss with flowmeter to measure experimental provision, makes reducing of experimental error, and experiment step is played and become simple, and experimental period shortens greatly.
Utility model content
For overcoming the above problems, the utility model provides the little pipeline frictional head loss with flowmeter of a kind of experimental error and measures experimental provision.
Its technical scheme adopted is: a kind of pipeline frictional head loss with flowmeter measures experimental provision and comprises, water pump, self-loopa supply tank, water intaking valve, pressure measurement framed bent, piezometric tube, graduation apparatus, glass experiment tube, end valve, experiment tube tail pipe, middle recovery tank, back-water valve (BWV), power switch, return pipe and testing table, is characterized in that: the bottom of described experiment table is fixed with water pump; The below of described experiment table is provided with the power switch for controlling water pump; The water inlet of described water pump extend in self-loopa supply tank, and the water delivering orifice of water pump is connected with glass experiment tube water inlet, is provided with water intaking valve between the water delivering orifice of water pump and glass experiment tube water inlet; The water delivering orifice of described glass experiment tube is connected with the water inlet of experiment tube tail pipe, and the water inlet of experiment tube tail pipe is provided with end valve, has been provided with flowmeter in experiment tube tail pipe; The outlet of described experiment tube tail pipe extend in middle recovery tank, and described middle recovery tank is communicated with self-loopa supply tank; The top of described testing table is provided with vertical piezometric tube; The lower port of described piezometric tube is connected with glass experiment tube by pipeline.
As preferably, the water inlet of described glass experiment tube is provided with buffer tank, and described buffer tank is provided with vent valve.
As preferably, described piezometric tube is arranged on pressure measurement framed bent, and described pressure measurement framed bent side is provided with piezometric tube to corresponding vertical graduation apparatus.
As preferably, described experiment tail pipe vertically arranges and keeps fixed position.
As preferably, the caliber of described experimental glass pipe can arrange different calibers with different experiments.
As preferably, between described middle recovery tank and self-loopa supply tank, be also provided with back-water valve (BWV).
As preferably, described experiment tube tail pipe in experimentation all the time not with middle recovery tank liquid level or sidewall contact.
The beneficial effect that the utility model obtains is: this experimental provision adds flowmeter, makes to test no longer to spend the more time to go to measure the cumulative volume flow through in certain time, has saved the time, has avoided traditional measurement process multiple error; Avoid simultaneously and move experiment tube tail pipe because of left and right and cause outflow end gross head to fluctuate, by Bernoulli equation e=z+ (P/ γ)+(U
2/ 2g), known thus avoid the instability of piezometric tube to change, make piezometric tube reading more accurate, artificial experimental error is lower.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of the glass experiment tube of Fig. 1;
Fig. 3 is the flowmeter structure schematic diagram of Fig. 1.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
As described in Figure 1, a kind of pipeline frictional head loss with flowmeter of the present utility model measures experimental provision, comprises water pump 1; Self-loopa supply tank 2; Water intaking valve 3; Buffer tank 4; Vent valve 5; Pressure measurement framed bent 6; Piezometric tube 7; Graduation apparatus 8; Glass experiment tube 9, end valve 10; Experiment tube tail pipe 11; Middle recovery tank 12; Back-water valve (BWV) 13; Power switch 14; Return pipe 15; Experiment table 16 and flowmeter 17.Experiment table 16 lower end is fixed with water pump 1, and the below of experiment table 16 is also provided with the power switch 14 controlling water pump 1 and flowmeter 17, and the top of experiment table 16 is provided with and is provided with vertical piezometric tube 7; Piezometric tube 7 is arranged on pressure measurement framed bent 6, and the side of pressure measurement framed bent 6 is provided with the graduation apparatus 8 for measuring piezometric tube 6 water surface elevation.
The water inlet of water pump 1 extend in self-loopa supply tank 2, and for supplying water to whole experimental provision, the water delivering orifice of water pump 1 is connected with glass experiment tube 9 water inlet; Be provided with water intaking valve 3 between the water delivering orifice of water pump 1 and glass experiment tube 9 water inlet, glass experiment tube 9 is communicated with by the lower port of pipeline with piezometric tube 7, and glass experiment tube 9 water inlet port is provided with buffer tank 4, and buffer tank 4 is provided with vent valve 5; The water delivering orifice of glass experiment tube 9 is connected with the water inlet of experiment tube tail pipe 11, and the inlet end of experiment tube tail pipe 9 is provided with end valve 10, has been provided with flowmeter 17 in experiment tube tail pipe 11, and experiment tube tail pipe 11 is in vertically arranging and being fixed and can not moving; The outlet of experiment tube tail pipe 11 extend in middle recovery tank 12, and middle recovery tank 12 is communicated with self-loopa supply tank 2, is provided with back-water valve (BWV) 13 between middle recovery tank 12 and self-loopa supply tank 2.
Before whole plant running, be first familiar with the structure of package unit.After checking experiment device, all valves of complete shut-down, switch on power, and press power switch 14, start flowmeter 17 and water pump 1, slowly open water intaking valve 3, until current are full of full pipe.In order to outside the gas outlet pipe in glass experiment tube 9, the vent valve 5 outwarded winding on buffer tank 4, until there is continuous print water to flow out, then screws vent valve 5.By regulating end valve 10 or water intaking valve 3, changing uninterrupted, piezometric tube 8 reading is changed, after band stability of flow, read the data of graduation apparatus 8 flowmeter 17.Control water intaking valve 3 and end valve 10 opening degree, repeat experiment.
In experimentation, the different port that glass experiment tube 9 is arranged can carry out different experiments of measuring from the different pipeline communications of 1-1 to the 1-4 of piezometric tube 8, if require that A, B, C point pressure is constant, keep glass experiment tube 9 pipe diameter size the same, if pressure is different, glass experiment tube 9 caliber can be different; Experiment tube tail pipe 11 in experimentation all the time not with middle recovery tank 12 liquid level or sidewall contact; In whole experimentation, recovery tank 12 keeps unimpeded with self-loopa supply tank 2 all the time.
Experimental provision of the present utility model has installed flowmeter 17 additional and has made to test and no longer spend the more time to go to measure the cumulative volume flow through in certain time in experiment tube tail pipe 11, save the time, avoid traditional measurement process multiple error, avoid and move experiment tube tail pipe because of left and right and cause outflow end gross head to fluctuate, by Bernoulli equation e=z+ (P/ γ)+(U
2/ 2g); U=Q/t is known thus avoid the instability of piezometric tube to change, and make piezometric tube reading more accurate, artificial experimental error is lower.Experiment tube tail pipe 11 is fixed and vertically installs and prevent it to be subject to fluid gravity effect and produce rotation.
Claims (7)
1. the measurement of the pipeline frictional head loss with a flowmeter experimental provision comprises, and water pump (1), self-loopa supply tank (2), water intaking valve (3), pressure measurement framed bent (6), piezometric tube (7), graduation apparatus (8), glass experiment tube (9), end valve (10), experiment tube tail pipe (11), middle recovery tank (12), back-water valve (BWV) (13), power switch (14), return pipe (15) and testing table (16) is characterized in that: the lower end base of described experiment table (16) is fixed with water pump (1); The below of described experiment table (16) is provided with the power switch (14) for controlling water pump (1); The water inlet of described water pump (1) extend in self-loopa supply tank (2), and the water delivering orifice of water pump (1) is connected with glass experiment tube (9) water inlet, is provided with water intaking valve (3) between the water delivering orifice of water pump (1) and glass experiment tube (9) water inlet; The water delivering orifice of described glass experiment tube (9) is connected with the water inlet of experiment tube tail pipe (11), and the water inlet of experiment tube tail pipe (11) is provided with end valve (10), has been provided with flowmeter (17) in experiment tube tail pipe (11); The outlet of described experiment tube tail pipe (11) extend in middle recovery tank (12), and described middle recovery tank (12) is communicated with self-loopa supply tank (2); The top of described testing table (16) is provided with vertical piezometric tube (7); The lower port of described piezometric tube (7) is connected with glass experiment tube (9) by pipeline.
2. a kind of pipeline frictional head loss with flowmeter according to claim 1 measures experimental provision, it is characterized in that: the water inlet of described glass experiment tube (9) is provided with buffer tank (4), and described buffer tank (4) is provided with vent valve (5).
3. a kind of pipeline frictional head loss with flowmeter according to claim 1 measures experimental provision, it is characterized in that: described piezometric tube (7) is arranged on pressure measurement framed bent (6), described pressure measurement framed bent (6) side is provided with piezometric tube (7) to corresponding vertical graduation apparatus (8).
4. a kind of pipeline frictional head loss with flowmeter according to claim 1 measures experimental provision, it is characterized in that: described experiment tube tail pipe (11) vertically arranges and keeps fixed position.
5. a kind of pipeline frictional head loss with flowmeter according to claim 1 measures experimental provision, it is characterized in that: the caliber of described glass experiment tube (9) can arrange different calibers with different requirement of experiment.
6. a kind of pipeline frictional head loss with flowmeter according to claim 1 measures experimental provision, it is characterized in that: be also provided with back-water valve (BWV) (13) between described middle recovery tank (12) and self-loopa supply tank (2).
7. a kind of pipeline frictional head loss with flowmeter according to claim 1 measures experimental provision, it is characterized in that: described experiment tube tail pipe (11) in experimentation all the time not with middle recovery tank (12) liquid level or sidewall contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520516769.9U CN204926623U (en) | 2015-07-16 | 2015-07-16 | Pipeline frictional head loss experimental apparatus of measurationing with flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520516769.9U CN204926623U (en) | 2015-07-16 | 2015-07-16 | Pipeline frictional head loss experimental apparatus of measurationing with flowmeter |
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| Publication Number | Publication Date |
|---|---|
| CN204926623U true CN204926623U (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520516769.9U Expired - Fee Related CN204926623U (en) | 2015-07-16 | 2015-07-16 | Pipeline frictional head loss experimental apparatus of measurationing with flowmeter |
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| CN (1) | CN204926623U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110570732A (en) * | 2019-08-29 | 2019-12-13 | 河海大学 | high accuracy hydraulics pipe flow laboratory bench |
-
2015
- 2015-07-16 CN CN201520516769.9U patent/CN204926623U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110570732A (en) * | 2019-08-29 | 2019-12-13 | 河海大学 | high accuracy hydraulics pipe flow laboratory bench |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20160716 |