CN209727176U - A kind of cold conditions accurately measures L-type standard pitot tube - Google Patents
A kind of cold conditions accurately measures L-type standard pitot tube Download PDFInfo
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- CN209727176U CN209727176U CN201920294804.5U CN201920294804U CN209727176U CN 209727176 U CN209727176 U CN 209727176U CN 201920294804 U CN201920294804 U CN 201920294804U CN 209727176 U CN209727176 U CN 209727176U
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- static pressure
- pressure conduit
- pitot tube
- tube
- conduit
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Abstract
The utility model discloses a kind of cold conditions to accurately measure L-type standard pitot tube, static pressure conduit including L-type and the stagnation pressure conduit being set in the static pressure conduit, side wall is equipped with several static pressure holes on the left of the static pressure conduit, the static pressure conduit right end is connected with static pressure tube, and the static pressure tube is fixedly mounted on the static pressure conduit by orientation lever, the orientation lever bottom and the static pressure conduit right end are mounted on means for correcting, the means for correcting includes curved mounting surface plate and the built-in bar shaped level meter that is jointly mounted on the curved mounting surface plate, end position on the left of the stagnation pressure conduit is equipped with pitot hole, the stagnation pressure conduit right end is connected with total pressure measurement pipe, and differential manometer is connected between the total pressure measurement pipe and the static pressure tube, the structure design of the utility model is reasonable, energy Enough correction Pitot tube inlet ends are completely the same with airflow direction, improve the measurement accuracy of Pitot tube.
Description
Technical field
The utility model relates to gas flow measurement technical fields more particularly to a kind of cold conditions to accurately measure L-type standard pitot tube.
Background technique
Pitot tube, also known as " pitot ", " Pitot-static tube ", English are Pitottube.Pitot tube is measurement air-flow stagnation pressure and quiet
A kind of tube to determine air velocity is pressed, is invented by French H. skin support and is gained the name.Strictly speaking, Pitot tube only measures gas
Flow stagnation pressure also known as stagnation pressure tube；Measure stagnation pressure simultaneously, static pressure just claims Pitot-static tube, but traditionally more Pitot-static tube is referred to as Pitot tube.
Pitot tube is a kind of tube for measuring air-flow stagnation pressure and static pressure to determine air velocity.The measuring cell is wide
The measurement of pressure and flow velocity, can obtain by conversion in the general air duct for being applied to the technical fields such as electric power, aviation, chemical industry, flue
Gas flow out.
But in existing Pitot tube when measuring, the head of Pitot tube and gas flow are often inconsistent, Pi Tuo
The deviation that airflow direction can bring about measurement is deviateed in the direction of tube head, haves the defects that certain.
For this purpose, we have proposed a kind of cold conditions to accurately measure L-type standard pitot tube.
Utility model content
The utility model provides a kind of cold conditions and accurately measures L-type standard pitot tube, it is therefore intended that can correct Pitot tube
Inlet end is consistent with airflow direction, promotes the measurement accuracy of Pitot tube.
To realize above-mentioned technical purpose and the technique effect, the utility model is achieved through the following technical solutions:
A kind of cold conditions accurately measures L-type standard pitot tube, static pressure conduit including L-type and is set in the static pressure conduit
Interior stagnation pressure conduit, static pressure conduit left side side wall are equipped with several static pressure holes, and the static pressure conduit right end is connected with
Static pressure tube, and the static pressure tube is fixedly mounted on the static pressure conduit by orientation lever, the orientation lever bottom
And the static pressure conduit right end is mounted on means for correcting, the means for correcting includes curved mounting surface plate and fitting installation
Built-in bar shaped level meter on the curved mounting surface plate, the end position on the left of the stagnation pressure conduit are equipped with pitot hole, institute
It states stagnation pressure conduit right end and is connected with total pressure measurement pipe, and be connected between the total pressure measurement pipe and the static pressure tube
Differential manometer.
Preferably, above-mentioned cold conditions accurately measures in L-type standard pitot tube, between the static pressure conduit and the stagnation pressure conduit
Isolating seal is carried out by sealing ring, and the end of the static pressure conduit is arranged in the sealing ring.
It is realized between total pressure measurement pipeline and static pressure measurement pipeline based on above-mentioned technical characteristic by the way that sealing ring is arranged
Isolation, to obtain the pressure value of stagnation pressure and static pressure, and then gas stream is accurately carried out by the pressure difference of stagnation pressure and static pressure
The measurement of speed.
Preferably, above-mentioned cold conditions accurately measures in L-type standard pitot tube, and the static pressure conduit is equipped with for showing that insertion is deep
The graduation mark of degree.
It can observe that Pitot tube is inserted into detection accurate and visually by the way that graduation mark is arranged based on above-mentioned technical characteristic
Depth in pipeline.
Preferably, above-mentioned cold conditions accurately measures in L-type standard pitot tube, and two blocks of curved mounting surface plates are jointly mounted to respectively
On the orientation lever and the static pressure conduit, and two pieces of curved mounting surface board bottom faces are located in approximately the same plane.
Based on above-mentioned technical characteristic, two blocks of curved mounting surface plates are jointly mounted to the orientation lever and the static pressure respectively
Conduit increases the bearing area between curved mounting surface plate and orientation lever and static pressure conduit, avoids orientation lever and quiet
The vibration of conduit in the gas flow is pressed, ensure that the accuracy of measurement, two pieces of curved mounting surface board bottom faces are located at same flat
On face, convenient for the smooth installation of Pitot tube.
Preferably, above-mentioned cold conditions accurately measures in L-type standard pitot tube, and two pieces of curved mounting surface plate four corners are all provided with
There is mounting hole, two pieces of curved mounting surface board bottom faces are equipped with resilient cushion.
The installation of Pitot tube, the setting of resilient cushion, drop are convenient for by the way that mounting hole is arranged based on above-mentioned technical characteristic
The low Oscillation Amplitude of Pitot tube improves the accuracy of Pitot tube measurement.
Preferably, above-mentioned cold conditions accurately measures in L-type standard pitot tube, and static pressure conduit left end is equipped with fixed ring, and
Buffer protection circle is equipped between the fixed ring and the static pressure conduit.
The fixation of Pitot tube left end is realized by fixed ring and buffer protection circle based on above-mentioned technical characteristic, is cooperated
Right end curved support panel can carry out firm installation to Pitot tube.
The beneficial effects of the utility model are:
The utility model can intuitively observe Pitot tube inlet end by vertically disposed means for correcting and air-flow is logical
Whether road is consistent, adjusts that can be realized Pitot tube inlet end after installation site consistent with airflow channel, greatly improves Pitot tube
Measurement accuracy.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the utility model embodiment, make required for being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings.
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the static pressure guide-tube structure schematic diagram of the utility model；
Fig. 3 is the fixed ring structural schematic diagram of the utility model；
Fig. 4 is the curved mounting surface plate structural schematic diagram of the utility model.
In attached drawing, parts list represented by the reference numerals are as follows:
1- static pressure conduit；2- stagnation pressure conduit；3- static pressure hole；4- static pressure tube；5- orientation lever；6- means for correcting；7- arc
Shape installs panel；Bar shaped level meter built in 8-；9- pitot hole；10- total pressure measurement pipe；11- differential manometer；12- sealing ring；13- is carved
Spend line；14- mounting hole；15- resilient cushion；16- fixed ring；17- buffer protection circle.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
All other embodiment obtained, fall within the protection scope of the utility model.
It please refers to shown in Fig. 1-4, the present embodiment is that a kind of cold conditions accurately measures L-type standard pitot tube, the static pressure including L-type
Conduit 1 and the stagnation pressure conduit 2 being set in static pressure conduit 1, between static pressure conduit 1 and stagnation pressure conduit 2 by sealing ring 12 into
Row isolating seal, and the end of static pressure conduit 1 is arranged in sealing ring 12, by the way that sealing ring 12 is arranged, realizes total pressure measurement pipe
Being isolated between road and static pressure measurement pipeline, to obtain the pressure value of stagnation pressure and static pressure, and then accurately by stagnation pressure with it is quiet
The pressure difference of pressure carries out the measurement of gas flow rate, and static pressure conduit 1 is equipped with the graduation mark 13 for showing insertion depth, passes through setting
Graduation mark 13 can observe the depth that Pitot tube is inserted into detection pipeline accurate and visually, and 1 left end of static pressure conduit is equipped with solid
Determine ring 16, and is equipped with buffer protection circle 17 between fixed ring 16 and static pressure conduit 1, by fixed ring 16 and buffer protection circle,
The fixation for realizing Pitot tube left end cooperates following curved support panels 7, can carry out firm installation, static pressure to Pitot tube
1 left side side wall of conduit is equipped with several static pressure holes 3, and 1 right end of static pressure conduit is connected with static pressure tube 4, and static pressure measurement
Pipe 4 is fixedly mounted on static pressure conduit 1 by orientation lever 5, and 5 bottom of orientation lever and 1 right end of static pressure conduit are mounted on correction
Device 6, means for correcting 6 include curved mounting surface plate 7 and the built-in bar shaped level meter being jointly mounted on curved mounting surface plate 7
8, two blocks of curved mounting surface plates 7 are jointly mounted to respectively on orientation lever 5 and static pressure conduit 1, and two pieces of 7 bottoms of curved mounting surface plate
Face is located in approximately the same plane, and two blocks of curved mounting surface plates 7 are jointly mounted to orientation lever 5 and static pressure conduit 1 respectively, increases
Bearing area between curved mounting surface plate 7 and orientation lever 5 and static pressure conduit 1 avoids orientation lever 5 and static pressure conduit 1
Vibration in the gas flow, ensure that the accuracy of measurement, and two pieces of 7 bottom surfaces of curved mounting surface plate are located in approximately the same plane, are convenient for
The end position of the smooth installation of Pitot tube, 2 left side of stagnation pressure conduit is equipped with pitot hole 9, and 2 right end of stagnation pressure conduit is connected with always
Measurement pipe 10 is pressed, and is connected with differential manometer 11 between total pressure measurement pipe 10 and static pressure tube 4.
A kind of specific implementation of the utility model, when in use, when Pitot tube needs to survey the air-flow of horizontal direction
When amount, Pitot tube is placed by body surface to be installed according to the depth that graduation mark 13 is shown, then carries out the position of Pitot tube
It is adjusted, so that the bubble being mounted in the built-in bar shaped level meter on static pressure conduit 1 is placed exactly in middle position, skin at this time
9 airintake direction of pitot hole of trustship is consistent with airflow direction, and Pitot tube is fixed on body surface to be installed using fixed screw
It is upper；When needing the air-flow to vertical direction to measure, according to the built-in bar shaped level meter on total pressure measurement pipe 10 into
Row is adjusted, and completes to fix.After Pitot tube completes installation, detection air-flow is flowed into out of pitot hole 9, and subsequent differential manometer 11 is to total
Pressure and static pressure carry out difference measurement, and the measurement of gas flow rate is carried out according to air pressure difference.The utility model is by being vertically arranged
Means for correcting 6 whether can intuitively observe Pitot tube inlet end consistent with airflow channel, after adjusting installation site
It realizes that Pitot tube inlet end is consistent with airflow channel, greatly improves the measurement accuracy of Pitot tube.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one of the utility model
In embodiment or example.In the present specification, schematic expression of the above terms be not necessarily referring to identical embodiment or
Example.Moreover, particular features, structures, materials, or characteristics described can be in any one or more embodiment or examples
In can be combined in any suitable manner.
The preferred embodiment in the utility model disclosed above is only intended to help to illustrate the utility model.Preferred embodiment is simultaneously
There is no the details that detailed descriptionthe is all, does not limit the specific embodiment that the utility model is only yet.Obviously, according to this specification
Content, can make many modifications and variations.These embodiments are chosen and specifically described to this specification, be in order to preferably explain
The principles of the present invention and practical application, so that skilled artisan be enable to better understand and utilize this practical
It is novel.The utility model is limited only by the claims and their full scope and equivalents.
Claims (6)
1. a kind of cold conditions accurately measures L-type standard pitot tube, it is characterised in that: static pressure conduit (1) including L-type and be set in
Stagnation pressure conduit (2) in the static pressure conduit (1), static pressure conduit (1) left side side wall are equipped with several static pressure holes (3), institute
It states static pressure conduit (1) right end to be connected with static pressure tube (4), and the static pressure tube (4) is fixed by orientation lever (5)
It is mounted on the static pressure conduit (1), orientation lever (5) bottom and the static pressure conduit (1) right end are mounted on correction
Device (6), the means for correcting (6) include curved mounting surface plate (7) and are jointly mounted on the curved mounting surface plate (7)
Built-in bar shaped level meter (8), the end position on the left of the stagnation pressure conduit (2) is equipped with pitot hole (9), the stagnation pressure conduit
(2) right end is connected with total pressure measurement pipe (10), and is connected between the total pressure measurement pipe (10) and the static pressure tube (4)
It is connected to differential manometer (11).
2. a kind of cold conditions according to claim 1 accurately measures L-type standard pitot tube, it is characterised in that: the static pressure is led
It manages and carries out isolating seal by sealing ring (12) between (1) and the stagnation pressure conduit (2), and the sealing ring (12) is arranged in institute
State the end of static pressure conduit (1).
3. a kind of cold conditions according to claim 1 accurately measures L-type standard pitot tube, it is characterised in that: the static pressure is led
(1) is managed equipped with the graduation mark (13) for showing insertion depth.
4. a kind of cold conditions according to claim 1 accurately measures L-type standard pitot tube, it is characterised in that: two pieces of arc peaces
Dress panel (7) is jointly mounted to respectively on the orientation lever (5) and the static pressure conduit (1), and two pieces of arc installations
Panel (7) bottom surface is located in approximately the same plane.
5. a kind of cold conditions according to claim 1 accurately measures L-type standard pitot tube, it is characterised in that: two pieces of arcs
Shape installation panel (7) four corners are equipped with mounting hole (14), and two pieces of curved mounting surface plate (7) bottom surfaces are equipped with resilient cushion
(15)。
6. a kind of cold conditions according to claim 1 accurately measures L-type standard pitot tube, it is characterised in that: the static pressure is led
It manages (1) left end and is equipped with fixed ring (16), and be equipped with buffer protection circle between the fixed ring (16) and the static pressure conduit (1)
(17)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920294804.5U CN209727176U (en) | 2019-03-08 | 2019-03-08 | A kind of cold conditions accurately measures L-type standard pitot tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920294804.5U CN209727176U (en) | 2019-03-08 | 2019-03-08 | A kind of cold conditions accurately measures L-type standard pitot tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209727176U true CN209727176U (en) | 2019-12-03 |
Family
ID=68685791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920294804.5U Expired - Fee Related CN209727176U (en) | 2019-03-08 | 2019-03-08 | A kind of cold conditions accurately measures L-type standard pitot tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209727176U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116953276A (en) * | 2023-09-20 | 2023-10-27 | 中国空气动力研究与发展中心空天技术研究所 | Flow field direction self-adaptive adjusting device of pitot tube and working method experiment method |
-
2019
- 2019-03-08 CN CN201920294804.5U patent/CN209727176U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116953276A (en) * | 2023-09-20 | 2023-10-27 | 中国空气动力研究与发展中心空天技术研究所 | Flow field direction self-adaptive adjusting device of pitot tube and working method experiment method |
| CN116953276B (en) * | 2023-09-20 | 2023-12-15 | 中国空气动力研究与发展中心空天技术研究所 | Flow field direction self-adaptive adjusting device of pitot tube and working method experiment method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20191203 Termination date: 20200308 |