CN203414259U - Fluid mechanics experiment table equipped with multiple Pitot tubes - Google Patents
Fluid mechanics experiment table equipped with multiple Pitot tubes Download PDFInfo
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- CN203414259U CN203414259U CN201320464089.8U CN201320464089U CN203414259U CN 203414259 U CN203414259 U CN 203414259U CN 201320464089 U CN201320464089 U CN 201320464089U CN 203414259 U CN203414259 U CN 203414259U
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- slide rail
- pitot tubes
- fluid mechanics
- pitot
- experiment table
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Abstract
The utility model discloses a fluid mechanics experiment table equipped with multiple Pitot tubes and belongs to the technical field of a fluid measuring instrument. The fluid mechanics experiment table equipped with the multiple Pitot tubes comprises a coordinate rack, a foundation, the Pitot tubes and a test segment, wherein the foundation is internally provided with a fan, a table surface of the foundation is fixedly connected with the test segment, the fan is connected with a bottom end of the test segment through an air channel, the foundation is provided with a slide rail, a bottom end of the coordinate rack is fixedly connected with a slide block in matching with the slide rail, the slide block is in slide connection with the slide rail, the coordinate rack slides along with the slide block in a length direction of the slide rail, a transverse rod of the coordinate rack is sleeved with at least two clips, each clip respectively clamps one Pitot tube, and the Pitot tubes slide along the clips in a length direction of the transverse rod. The fluid mechanics experiment table can conveniently and accurately realize movement of the Pitot tubes to designated measuring points while measuring a fluid flow velocity and a flow, can further measure data of multiple measuring points on a line, and has properties of simplified experiment steps, simple operation and more accurate experiment data.
Description
Technical field
The utility model belongs to fluid measurement Instrument technology field, more particularly, relates to a kind of fluid mechanics experiment table of being furnished with a plurality of Pitot tubes.
Background technology
Rate of flow of fluid and flow are the important parameters of fluid, and our life, environmental protection, science and technology and engineering are had to important using value.
Normal Hydrodynamic Generalized Test-Stand meter fluid operator flow velocity and the flow of adopting in the rate of flow of fluid experiments of measuring of the measurement flow velocity of fluid and a lot of ， of the method for flow school.Its computing formula is
p wherein
0: total head energy, i.e. total pressure, N/m
2; P: static energy, i.e. static pressure, N/m
2; ρ: fluid density, Kg/m
3.What during experiment, Pitot tube recorded is the speed of certain point, in order to determine the average velocity on certain cross section, this cross section must be divided into some parts, measures the speed of each part, and then asks its mean value:
after trying to achieve mean flow rate, according to the size of sectional area F, can try to achieve flow: Q=V
all* F; In test, by moving coordinate frame, make Pitot tube arrive the total head energy P that appointment measuring point is measured this point
0with static energy P.But during experiment, experimenter can only be by range estimation, with the moving coordinate frame of manual mode machinery, make Pitot tube to specifying measuring point, move very trouble, also cannot accurately Pitot tube be moved to the point position of appointment, experimental implementation is got up and bother very much, expended a large amount of experimental periods; And due to can not accurately mobile Pitot tube to specifying measuring point, make the total head energy P measuring
0produce larger error with static energy P, also affected the flow velocity that calculates and the degree of accuracy of flow; Make troubles to people's experiment, can not meet people's experiment demand; In addition, a Pitot tube is often only installed on existing experimental apparatus, during measuring point on measuring same straight line, is needed repeatedly moving coordinate frame, make experimental implementation complicated, step is various.
By retrieval, find, China Patent No.: ZL201220486718.2, the day for announcing is on March 13rd, 2013, invention and created name is: a kind ofly facilitate mobile Pitot tube to the experiment table of specifying measuring point, it comprises frame of axes, base, Pitot tube and test section, test section is connected mutually with base, Pitot tube is connected with frame of axes by clip, on described base, be provided with four slide rails, the two ends of the first slide bar and the second slide bar snap fit onto respectively in slide rail, and frame of axes is connected mutually with cross-hole, the first slide bar and the second slide bar divide other to pass in cross-hole, on one end of two slide bars, be respectively arranged with trip bolt, on base, be provided with directions X rule and Y-direction rule, although having realized, this application case accurately Pitot tube is moved to appointment measuring point, for experiment provides convenience, but this application case only has a Pitot tube, while making to test, need repeatedly moving coordinate frame experiments of measuring data, can not record the data of a plurality of measuring points simultaneously, experimental procedure is increased, and experimentation is complicated.
Utility model content
1. the technical matters that utility model will solve
The purpose of this utility model solves in prior art exactly, general fluid mechanics synthetic experiment bench is when measuring rate of flow of fluid and flow, can not facilitate accurately mobile Pitot tube to the problem of specifying measuring point and experimental procedure complexity, a kind of fluid mechanics experiment table of being furnished with a plurality of Pitot tubes is provided, to solve above deficiency, convenient use.
2. technical scheme
For achieving the above object, the technical scheme that the utility model provides is:
A kind of fluid mechanics experiment table of being furnished with a plurality of Pitot tubes of the present utility model, comprise frame of axes, base, Pitot tube and test section, base inside is provided with blower fan, on base table top, be fixed with test section, blower fan is connected with test section bottom by air channel, on described base, is provided with slide rail, and frame of axes bottom is fixed with the slide block matching with slide rail, and this slide block and slide rail are slidably connected, with slide block, the length direction along slide rail slides frame of axes; The cross bar slip cap of above-mentioned frame of axes is connected at least two clips, and on each clip, clamping has a Pitot tube, and with clip, the length direction along cross bar slides Pitot tube.The utility model is by regulating frame of axes to slide along slide rail length direction, regulate clip to slide along the length direction of cross bar, can realize easily mobile Pitot tube to specifying measuring point, and owing to being provided with at least two Pitot tubes, experimental procedure is simplified, simple to operate.
As of the present utility model, further improve, described slide rail left side is parallel is provided with Y-direction rule, and on cross bar surface, is provided with directions X rule.The utility model slide rail left side is provided with Y-direction rule, and cross bar surface is provided with directions X rule, operator exactly mobile Pitot tube to specifying measuring point.
As of the present utility model, further improve, the zero graduation of described Y-direction rule is arranged at rule central authorities, and scale size increases progressively to two ends.
As of the present utility model, further improve, on described clip, be provided with trip bolt.On the utility model clip, be provided with trip bolt, clip can be fixed after making clip move to assigned address together with Pitot tube, prevent from moving in experimentation.
As of the present utility model, further improve, the cross bar slip cap of described frame of axes is connected to 2～4 clips.
3. beneficial effect
The technical scheme that adopts the utility model to provide, compares with existing known technology, has following beneficial effect:
(1) a kind of fluid mechanics experiment table of being furnished with a plurality of Pitot tubes of the present utility model, because frame of axes bottom is slidably matched by slide block and slide rail, on the cross bar of frame of axes, slip cap then accompanies the clip of Pitot tube, by regulating frame of axes to slide along slide rail length direction, regulate clip to slide along the length direction of cross bar, can realize mobile Pitot tube easily, to specifying measuring point, provides convenience for testing;
(2) a kind of fluid mechanics experiment table of being furnished with a plurality of Pitot tubes of the present utility model, slide rail left side is provided with Y-direction rule, and cross bar surface is provided with directions X rule, and operator accurately mobile Pitot tube, to specifying measuring point, improves experiment degree of accuracy;
(3) a kind of fluid mechanics experiment table of being furnished with a plurality of Pitot tubes of the present utility model, the zero graduation of Y-direction rule is arranged at rule central authorities, and scale size increases progressively to two ends, and operator be take this zero graduation as basic point, for experimental calculation and measurement are provided convenience;
(4) a kind of fluid mechanics experiment table of being furnished with a plurality of Pitot tubes of the present utility model, because clip is provided with trip bolt, when being moved to, Pitot tube specifies after measuring point, can tighten trip bolt Pitot tube is fixed on to point position, prevent because accidental movement frame of axes affects experimental data, make experiment more accurate;
(5) a kind of fluid mechanics experiment table of being furnished with a plurality of Pitot tubes of the present utility model, owing to being provided with at least two Pitot tubes, during each length direction moving coordinate frame along slide rail, can record the data of a plurality of measuring points on straight line simultaneously, experimental procedure is simplified, simple to operate.
Accompanying drawing explanation
Fig. 1 is a kind of one-piece construction schematic diagram of being furnished with the fluid mechanics experiment table of a plurality of Pitot tubes of the present utility model;
Fig. 2 measures the fundamental diagram of flow velocity by Pitot tube and many inclined-tube manometers.
Label declaration in schematic diagram:
1, frame of axes; 2, base; 3, slide rail; 4, test section; 5, Y-direction rule; 6, slide block; 7, cross bar; 8, clip; 9, air channel; 10, Pitot tube; 11, blower fan; 12, trip bolt; 13, many inclined-tube manometers.
Embodiment
Below in conjunction with embodiment and Figure of description, the utility model is described in detail.
In conjunction with Fig. 1 and Fig. 2, a kind of fluid mechanics experiment table of being furnished with a plurality of Pitot tubes of the present embodiment, comprises frame of axes 1, base 2, Pitot tube 10 and test section 4, and base 2 inside are provided with blower fan 11, on base 2 table tops, be fixed with test section 4, blower fan 11 is connected with test section 4 bottoms by air channel 9.
On the base 2 of the present embodiment, be provided with slide rail 3, frame of axes 1 bottom is fixed with the slide block 6 matching with slide rail 3, and this slide block 6 is slidably connected with slide rail 3, and frame of axes 1 can slide along slide rail 3 length directions with slide block 6; On the cross bar 7 of frame of axes 1, slip cap is connected to 2 clips 8, on each clip 8, clamping has a Pitot tube 10, when regulating Pitot tube 10 height, first unclamps clip 8, transfer again Pitot tube 10 height to appropriate location, and Pitot tube 10 can slide by the length direction along cross bar 7 with clip 8; By regulating frame of axes 1 to slide along the length direction of slide rail 3, regulate clip 8 to slide along the length direction of cross bar 7, can realize easily mobile Pitot tube 10 to specifying measuring point, and during each length direction moving coordinate frame 1 along slide rail 3, can record the data of 2 measuring points on straight line simultaneously, experimental procedure is simplified, for experiment is provided convenience.
The present embodiment slide rail 3 left sides are provided with Y-direction rule 5 abreast, and the zero graduation of Y-direction rule 5 is arranged at rule central authorities, and scale size increases progressively to these ruler two ends, operator be take this zero graduation as basic point, for experimenter's experimental calculation and measurement, provide convenience, also facilitate user to operate; And cross bar is provided with directions X rule on 7 surfaces, and the zero graduation of this rule is concordant with the end of cross bar 7, operator exactly mobile Pitot tube 10, to specifying measuring point, improves experiment degree of accuracy.
During use, first adjust many inclined-tube manometer 13 levels, and the top of Pitot tube 10 is connected (as shown in Figure 2) with many inclined-tube manometers 13 by sebific duct, and opens blower fan 11 switches, during specific experiment, many inclined-tube manometers 13 of employing are combined by a plurality of inclined-tube manometers; Then according to the position of the measuring point of test section 4, length direction moving coordinate frame 1 along slide rail 3, length direction along cross bar 7 moves 2 clips 8 to assigned address again, just 2 Pitot tubes 10 can be moved to appointment measuring point, measures the total head energy P of this measuring point by many inclined-tube manometers 13
0with static energy P; And during each length direction moving coordinate frame 1 along slide rail 3, can record the data of 2 measuring points on straight line simultaneously, be not easy to the removable single Pitot tube 10 of simultaneously-measured measuring point and measure, simplified operation steps, can facilitate, measure accurately the total head energy P of each measuring point
0with static energy P, and pass through formula
calculate speed V, and then ask its mean value:
according to the size of sectional area F, can try to achieve flow: Q=V
all* F; So just can by the utility model, measure easily and accurately flow velocity and the flow of fluid, simplify operation steps, further reduce the accidental error of experiment, for experiment facilitates.
The basic structure of the present embodiment is with embodiment 1, its difference is, described clip 8 is set to 3, and on clip 8, be provided with trip bolt 12, when Pitot tube 10 is moved to, specify after measuring point, can tighten trip bolt 12, make trip bolt 12 hold out against the cross bar 7 of frame of axes 1, Pitot tube 10 is fixed on to point position, prevents from, because accidental movement Pitot tube 10 affects experimental data, making experimental data more accurate.The present embodiment during at every turn along the length direction moving coordinate frame 1 of slide rail 3, can record the data of 3 measuring points on straight line simultaneously, is applicable to measure medium-sized test section.
Embodiment 3
The basic structure of the present embodiment is with embodiment 1, and its difference is, described clip 8 is set to 4, during at every turn along the length direction moving coordinate frame 1 of slide rail 3, can record the data of 4 measuring points on straight line simultaneously, is applicable to measure larger test section.
Below schematically the utility model and embodiment thereof are described, this description does not have restricted, and shown in accompanying drawing is also one of embodiment of the present utility model, and actual structure is not limited to this.So, if those of ordinary skill in the art is enlightened by it, in the situation that not departing from the utility model creation aim, without the creationary frame mode similar to this technical scheme and the embodiment of designing, all should belong to protection domain of the present utility model.
Claims (5)
1. a fluid mechanics experiment table of being furnished with a plurality of Pitot tubes, comprise frame of axes (1), base (2), Pitot tube (10) and test section (4), base (2) inside is provided with blower fan (11), on base (2) table top, be fixed with test section (4), blower fan (11) is connected with test section (4) bottom by air channel (9), it is characterized in that:
On described base (2), be provided with slide rail (3), frame of axes (1) bottom is fixed with the slide block (6) matching with slide rail (3), and this slide block (6) is slidably connected with slide rail (3), with slide block (6), the length direction along slide rail (3) slides frame of axes (1);
Cross bar (7) slip cap of above-mentioned frame of axes (1) is connected at least two clips (8), and the upper clamping of each clip (8) has a Pitot tube (10), and with clip (8), the length direction along cross bar (7) slides Pitot tube (10).
2. a kind of fluid mechanics experiment table of being furnished with a plurality of Pitot tubes according to claim 1, is characterized in that: described slide rail (3) left side is parallel is provided with Y-direction rule (5), and is provided with directions X rule on cross bar (7) surface.
3. a kind of fluid mechanics experiment table of being furnished with a plurality of Pitot tubes according to claim 2, is characterized in that: the zero graduation of described Y-direction rule (5) is arranged at rule central authorities, and scale size increases progressively to two ends.
4. according to a kind of fluid mechanics experiment table of being furnished with a plurality of Pitot tubes described in claim 1 or 3, it is characterized in that: on described clip (8), be provided with trip bolt (12).
5. a kind of fluid mechanics experiment table of being furnished with a plurality of Pitot tubes according to claim 4, is characterized in that: cross bar (7) slip cap of described frame of axes (1) is connected to 2～4 clips (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320464089.8U CN203414259U (en) | 2013-07-31 | 2013-07-31 | Fluid mechanics experiment table equipped with multiple Pitot tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320464089.8U CN203414259U (en) | 2013-07-31 | 2013-07-31 | Fluid mechanics experiment table equipped with multiple Pitot tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203414259U true CN203414259U (en) | 2014-01-29 |
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|---|---|---|---|
| CN201320464089.8U Expired - Fee Related CN203414259U (en) | 2013-07-31 | 2013-07-31 | Fluid mechanics experiment table equipped with multiple Pitot tubes |
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| CN (1) | CN203414259U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104090026A (en) * | 2014-07-04 | 2014-10-08 | 天津大学 | Device capable of enabling ultrasonic transducer to horizontally and vertically move |
| CN104407058A (en) * | 2014-11-28 | 2015-03-11 | 天津大学 | Fixing device of ultrasonic transducer for detecting quality of medium-small-sized concrete test block |
| CN106129499A (en) * | 2016-08-31 | 2016-11-16 | 宁德时代新能源科技股份有限公司 | Exhaust gas volume detection device for power battery and design method for exhaust pipe |
-
2013
- 2013-07-31 CN CN201320464089.8U patent/CN203414259U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104090026A (en) * | 2014-07-04 | 2014-10-08 | 天津大学 | Device capable of enabling ultrasonic transducer to horizontally and vertically move |
| CN104407058A (en) * | 2014-11-28 | 2015-03-11 | 天津大学 | Fixing device of ultrasonic transducer for detecting quality of medium-small-sized concrete test block |
| CN106129499A (en) * | 2016-08-31 | 2016-11-16 | 宁德时代新能源科技股份有限公司 | Exhaust gas volume detection device for power battery and design method for exhaust pipe |
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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: 20140129 Termination date: 20140731 |
|
| EXPY | Termination of patent right or utility model |