CN207074519U - A kind of Pitot tube - Google Patents
A kind of Pitot tube Download PDFInfo
- Publication number
- CN207074519U CN207074519U CN201720408797.8U CN201720408797U CN207074519U CN 207074519 U CN207074519 U CN 207074519U CN 201720408797 U CN201720408797 U CN 201720408797U CN 207074519 U CN207074519 U CN 207074519U
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- Prior art keywords
- measurement
- tube
- pipe
- mouth
- tube head
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Abstract
It the utility model is related to education equipment facility field, specifically a kind of Pitot tube, including measurement pipe, measurement tube head, stationary fixture, fixed mount and lid.Described measurement tubular construction is elongated bend pipe, and inside and outside jaw elements are provided with inside measurement pipe, and the lower end of measurement pipe is connected with measurement tube head；Interior conduit connection is total pressure measurement mouth, and outer layer pipe connection is static pressure measurement mouth.Described measurement pipe head shapes are bullet type, and measurement tube head is arranged on measurement pipe lower end, and described stationary fixture is arranged in measurement pipe, stationary fixture is provided with mounting hole, fixing groove, fixing hole and positioning hole, the cross sectional shape of fixing groove is rectangle, fixed mount is provided with installing arm, circular hole and adjustment hole, the utility model provide a kind of Pitot tube, and a fixing device is added on Pitot tube, fixation can be played to differential manometer, facilitate teacher to complete experimental teaching demonstration.
Description
Technical field
It the utility model is related to education equipment facility field, specifically a kind of Pitot tube.
Background technology
It is well known that education equipment facility is helping teacher user Students ' Learning knowledge, open up thinking, demonstration science original
Reason, the ability and thinking aspect for improving student's Scientific exploration principle are played in important effect, and still, traditional education equipment is set
Although standby be made that some improvement, also many problems need to improve.
Known existing education equipment facility is solving the above problems, but still has many problem and shortage to need to continue to change
It is kind, such as education equipment facility is using simple framework, intelligent deficiency, at present in school experiment room apparatus, generally existing
Ageing equipment is serious, and test result is inaccurate, and in terms of hydrodynamics testing equipment, many times teacher can only lead student to lead to
The method for crossing naked-eye observation explains some fluid mechanics principle knowledge, reducing effect is produced to test mass, in Pitot tube flow measurement
In terms of fast experiment equipment, the platform of multi-functional fluid Experiments of Machanics at present equipment is complicated, is not easy to bring class demonstration into, and in single skin
In terms of trustship velocity measurement experiment equipment, currently without the device of independent set of fixed Pitot tube, if teacher thinks to demonstrate in court
Pitot tube velocity measurement is tested tests, it is necessary to do teaching demonstration by the help of cord, rubber band, and common laboratory skin
Trustship device, testing tube and differential manometer are two scattered parts, and reducing effect is produced to the overall quality of presentation of experiment.This reality
With a kind of Pitot tube of new offer, a fixing device is added on Pitot tube, fixation can be played to differential manometer, make survey
Test tube and differential manometer are secured together, can be during student and teacher carry out Pitot tube velocity measurement flux experiment, convenient religion
Teacher completes experimental teaching demonstration, is also convenient for student and does yourself this experiment, and the equipment simple detachable is easy to install, can
Improve the teaching demonstration quality of Pitot tube velocity measurement experiment.
The content of the invention
Solved the above problems for prior art device, but be still there are many problem and shortage to need to continue to improve,
The utility model provides a kind of Pitot tube, and a fixing device is added on Pitot tube, can play fixation to differential manometer,
Testing tube and differential manometer are secured together, can be during student and teacher carry out Pitot tube velocity measurement flux experiment, side
Just teacher completes experimental teaching demonstration, is also convenient for student and does yourself this experiment, and the equipment simple detachable is easy to install,
The teaching demonstration quality of Pitot tube velocity measurement experiment can be improved.
Technical scheme is used by the utility model solves its technical problem：A kind of Pitot tube, including measurement pipe, measurement
Tube head, stationary fixture, fixed mount and lid.
Described measurement tubular construction is elongated bend pipe, and inside and outside jaw elements, the lower end of measurement pipe are provided with inside measurement pipe
It is connected with measurement tube head；Inside and outside jaw elements inside measurement pipe are two pipelines being not communicated with, and interior conduit is in internal layer, its section
Face is shaped as circle, and Outer Tube is between measurement pipe outer wall and interior conduit, and its cross sectional shape is annular, and interior conduit connection is total
Pressure measurement mouth, outer layer pipe connection is static pressure measurement mouth.
Described measurement pipe head shapes are bullet type, the measurement tube head design of bullet type, mainly consider to reduce measurement pipe
Local interference of the head to water flow velocity；Measurement tube head is arranged on measurement pipe lower end, and the connected mode for measuring tube head and measurement pipe is
Threaded connection, such benefit be measurement tube head and measurement pipe be no longer an overall structure, peace can be dismantled by becoming one
The structure of dress, it is convenient for measuring the maintenance and replacing of tube head；Measurement tube head is provided with total pressure measurement mouth, static pressure measurement mouth and connection
Mouthful, total pressure measurement mouth communicates with connector, and connector communicates with the internal layer pipeline of measurement pipe, the outer tube of connector and measurement pipe
Road is not communicated with, and static pressure measurement mouth communicates with the outer layer pipeline of measurement pipe, and the internal layer pipeline of static pressure measurement mouth and measurement pipe is not communicated with,
Total pressure measurement mouth is located at the positive front end of measurement tube head, and it is shaped as concave hole type, and static pressure measurement mouth is located at outside the rear end of measurement tube head
Surface, the quantity of static pressure measurement mouth is two, and it is shaped as rectangular recess, and connector is located inside the rear end of measurement tube head, and
Screw thread is provided with connector；During experiment measurement, measurement tube head need to face the flow velocity direction of current, now measure stagnation pressure on tube head
Measurement mouth measure be current gross pressure, measure tube head on static pressure measurement mouth measure be current static pressure, according to measurement
The difference of stagnation pressure and static pressure, it is possible to enter the calculating of the flow velocity and flow of water-filling.
Described stationary fixture is arranged in measurement pipe, and stationary fixture is provided with mounting hole, fixing groove, fixing hole and positioning
Hole, and the quantity of fixing groove is two, the cross sectional shape of fixing groove is rectangle；Stationary fixture be it is dimeric, can be with
Carry out assembly and disassembly；Mounting hole effect is for stationary fixture is installed in measurement pipe, and the effect of fixing groove is to make fixation
Frame is installed on stationary fixture, is needed to install fixed screw on fixing hole, stationary fixture is fixed in measurement pipe, the side of also functioning to
Just the effect mounted and dismounted, the effect of positioning hole are the installation sites for fixing and adjusting fixed mount on stationary fixture.
Described fixed mount is arranged on stationary fixture, and fixed mount is provided with installing arm, circular hole and adjustment hole；Installing arm is
In the fixing groove of stationary fixture, the effect of circular hole is that the effect of adjustment hole is for fixing for installing differential manometer
With the position of regulation differential manometer.
Described lid is arranged on the upper end of measurement pipe, and lid is provided with stagnation pressure tube, static tube, internal layer interface tube and outer layer
Interface tube, and internal layer sealing ring and outer layer sealing ring are installed in lid；Stagnation pressure tube one end is connected to differential manometer, and its other end is
Communicated with total pressure measurement mouth, static tube one end is connected to differential manometer, and its other end communicates with static pressure measurement mouth, in pressure difference
In meter, one end for being connected with stagnation pressure tube is total pressure head, and the one end being connected with static tube is hydrostatic head, in differential manometer
Water-column difference exactly tests the water flow velocity to be measured.
Preferably, seal washer is provided with the connector of described measurement tube head, ensures the sealing of connector.
Preferably, there is fillet at described total pressure measurement mouth and static pressure measurement mouth, effect is to slow down the resistance to water.
The beneficial effects of the utility model are：
1. the utility model provides a kind of Pitot tube, a fixing device is added on Pitot tube, differential manometer can be risen
To fixation, testing tube and differential manometer are secured together, it is real that Pitot tube velocity measurement flow can be carried out in student and teacher
During testing, facilitate teacher complete experimental teaching demonstration, be also convenient for student do yourself this experiment.
2. the utility model provides a kind of Pitot tube, it measures tube head and is designed as bullet type, can reduce measurement tube head pair
The local interference of water flow velocity, so as to reduce experimental error.
3. the utility model provides a kind of Pitot tube, it measures tube head with the connected mode of measurement pipe to be threadedly coupled, this
The benefit of sample be measurement tube head and measurement pipe be no longer an overall structure, become a structure that can be removed and installed, side
Just the maintenance and replacing of tube head are measured.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structure chart of the utility model measurement tube head；
Fig. 3 is the top view of the utility model measurement tube head；
Fig. 4 is the utility model Fig. 3 A-A faces sectional view；
Fig. 5 is the front view of the utility model lid；
Fig. 6 is the sectional view in the utility model Fig. 5 B-B faces；
In figure：Measurement pipe (1), measurement tube head (2), stationary fixture (3), fixed mount (4), lid (5), total pressure measurement mouth
(21), static pressure measurement mouth (22), connector (23), mounting hole (31), fixing groove (32), fixing hole (33), positioning hole (34), peace
Fill arm (41), circular hole (42), adjustment hole (43), stagnation pressure tube (51), static tube (52), internal layer interface tube (53), outer layer interface tube
(54), internal layer sealing ring (55), outer layer sealing ring (56), screw thread (231).
Embodiment
In order that technological means, creation characteristic, reached purpose and effect that the utility model is realized are easy to understand, under
Face combines embodiment, and the utility model is expanded on further.
Such as Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, a kind of Pitot tube of the present embodiment, including measurement pipe 1, measurement tube head 2,
Stationary fixture 3, fixed mount 4 and lid 5.
The described structure of measurement pipe 1 is elongated bend pipe, and the inside of measurement pipe 1 is provided with inside and outside jaw elements, under measurement pipe 1
End is connected with measurement tube head 2；Inside and outside jaw elements inside measurement pipe 1 are two pipelines being not communicated with, interior conduit in internal layer,
Its cross sectional shape is circle, and for Outer Tube between the outer wall of measurement pipe 1 and interior conduit, its cross sectional shape is annular, and interior conduit connects
Be total pressure measurement mouth, outer layer pipe connection is static pressure measurement mouth.
Described measurement tube head 2 is shaped as bullet type, and the measurement tube head 2 of bullet type designs, and mainly considers to reduce measurement
Local interference of the tube head 2 to water flow velocity；Measurement tube head 2 is arranged on the lower end of measurement pipe 1, and measures tube head 2 and the connection of measurement pipe 1
Mode for threaded connection, such benefit be measurement tube head 2 and measurement pipe 1 be no longer an overall structure, becoming one can
With the structure removed and installed, the maintenance and replacing of tube head 2 are convenient for measuring；Measurement tube head 2 is provided with total pressure measurement mouth 21, and static pressure is surveyed
Amount mouth 22 and connector 23, total pressure measurement mouth 21 communicate with connector 23, and connector 23 communicates with the internal layer pipeline of measurement pipe 1,
Connector 23 and the outer layer pipeline of measurement pipe 1 are not communicated with, and static pressure measurement mouth 22 communicates with the outer layer pipeline of measurement pipe 1, and static pressure is surveyed
Amount mouth 22 and the internal layer pipeline of measurement pipe 1 are not communicated with, and total pressure measurement mouth 21 is located at the positive front end of measurement tube head 2, and it is shaped as recessed
Pass, static pressure measurement mouth 22 are located at the back end outer surface of measurement tube head 2, and the quantity of static pressure measurement mouth 22 is two, and it is shaped as
Rectangular recess, connector 23 is located inside the rear end of measurement tube head 2, and screw thread 231 is provided with connector 23；During experiment measurement,
Measurement tube head 2 need to face the flow velocity directions of current, now measure total pressure measurement mouth 21 on tube head 2 and measure be current stagnation pressure
Power, measure tube head 2 on static pressure measurement mouth 22 measure be current static pressure, according to the difference of the stagnation pressure of measurement and static pressure, so that it may
To enter the calculating of the flow velocity of water-filling and flow.
Described stationary fixture 3 is arranged in measurement pipe 1, and stationary fixture 3 is provided with mounting hole 31, and fixing groove 32 is fixed
Hole 33 and positioning hole 34, and the quantity of fixing groove 32 is two, the cross sectional shape of fixing groove 32 is rectangle；Stationary fixture 3 be by
It is dimerous, assembly and disassembly can be carried out；Mounting hole 31 effect be for stationary fixture 3 is installed in measurement pipe 1,
The effect of fixing groove 32 is fixed mount 4 is installed on stationary fixture 3, needs to install fixed screw on fixing hole 33, makes fixation
Fixture 3 is fixed in measurement pipe 1, also functions to the effect being easy for installation and removal, the effect of positioning hole 34 is for fixing and adjusting
Save installation site of the fixed mount 4 on stationary fixture 3.
Described fixed mount 4 is arranged on stationary fixture 3, and fixed mount 4 is provided with installing arm 41, circular hole 42 and adjustment hole
43；Installing arm 41 is mounted in the fixing groove 32 of stationary fixture 3, and the effect of circular hole 42 is for installing differential manometer, adjusting
The effect in hole 43 is the position for fixing and adjusting differential manometer.
Described lid 5 is arranged on the upper end of measurement pipe 1, and lid 5 is provided with stagnation pressure tube 51, and static tube 52, inner tube connects
Mouth 53 and outer layer interface tube 54, and internal layer sealing ring 55 and outer layer sealing ring 56 are installed in lid 5；The one end of stagnation pressure tube 51 connects
Differential manometer, its other end communicates with total pressure measurement mouth 21, and the one end of static tube 52 is connected to differential manometer, its other end be with
What static pressure measurement mouth 22 communicated, in differential manometer, one end for being connected with stagnation pressure tube 51 is total pressure head, is connected with static tube 52
One end be hydrostatic head, the water-column difference in differential manometer exactly tests the water flow velocity to be measured, added on Pitot tube
One fixing device, fixation can be played to differential manometer, be secured together testing tube and differential manometer, can in student and
During teacher carries out Pitot tube velocity measurement flux experiment, facilitate teacher to complete experimental teaching demonstration, it is dynamic to be also convenient for student oneself
Hand does this experiment, it is possible to increase the teaching demonstration quality of Pitot tube velocity measurement experiment.
General principle, principal character and advantage of the present utility model has been shown and described above.The technical staff of the industry
It should be appreciated that the utility model is not restricted to the described embodiments, the description in above-mentioned embodiment and specification is simply said
Bright principle of the present utility model, on the premise of the spirit and scope of the utility model is not departed from, the utility model also has various
Changes and improvements, these changes and improvements are both fallen within the range of the requires of the utility model protection.The requires of the utility model is protected
Scope is by appended claims and its equivalent thereof.
Claims (3)
1. a kind of Pitot tube, including measurement pipe (1), measurement tube head (2), stationary fixture (3), fixed mount (4) and lid (5), its
It is characterised by：
Described measurement pipe (1) structure is elongated bend pipe, and inside and outside jaw elements are provided with inside measurement pipe (1), measurement pipe (1)
Lower end is connected with measurement tube head (2)；
Described measurement tube head (2) is shaped as bullet type, and measurement tube head (2) is arranged on measurement pipe (1) lower end, and measures tube head
(2) for the connected mode with measurement pipe (1) to be threadedly coupled, measurement tube head (2) is provided with total pressure measurement mouth (21), static pressure measurement mouth
(22) communicated with connector (23), total pressure measurement mouth (21) with connector (23), connector (23) and the inner tube of measurement pipe (1)
Road is communicated, and connector (23) and the outer layer pipeline of measurement pipe (1) are not communicated with, static pressure measurement mouth (22) and the outer layer of measurement pipe (1)
Pipeline is communicated, and static pressure measurement mouth (22) and the internal layer pipeline of measurement pipe (1) are not communicated with, and total pressure measurement mouth (21) is located at measurement tube head
(2) positive front end, it is shaped as circular hole, and static pressure measurement mouth (22) is located at the back end outer surface of measurement tube head (2), static pressure measurement mouth
(22) quantity is two, and it is shaped as rectangular recess, and connector (23) is located inside the rear end of measurement tube head (2), and is connected
Mouth (23) place is provided with screw thread (231)；
Described stationary fixture (3) is arranged in measurement pipe (1), and stationary fixture (3) is provided with mounting hole (31), fixing groove
(32), fixing hole (33) and positioning hole (34), and the quantity of fixing groove (32) is two, the cross sectional shape of fixing groove (32) is square
Shape；
Described fixed mount (4) is arranged on stationary fixture (3), and fixed mount (4) is provided with installing arm (41), circular hole (42) and adjusted
Knothole (43)；
Described lid (5) is arranged on the upper end of measurement pipe (1), and lid (5) is provided with stagnation pressure tube (51), static tube (52), interior
Layer interface tube (53) and outer layer interface tube (54), and internal layer sealing ring (55) and outer layer sealing ring (56) are installed in lid (5).
A kind of 2. Pitot tube according to claim 1, it is characterised in that：The connector (23) of described measurement tube head (2)
Place is provided with seal washer.
A kind of 3. Pitot tube according to claim 1, it is characterised in that：Described total pressure measurement mouth (21) and static pressure measurement
There is fillet at mouth (22) place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720408797.8U CN207074519U (en) | 2017-04-18 | 2017-04-18 | A kind of Pitot tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720408797.8U CN207074519U (en) | 2017-04-18 | 2017-04-18 | A kind of Pitot tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207074519U true CN207074519U (en) | 2018-03-06 |
Family
ID=61513588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720408797.8U Expired - Fee Related CN207074519U (en) | 2017-04-18 | 2017-04-18 | A kind of Pitot tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207074519U (en) |
-
2017
- 2017-04-18 CN CN201720408797.8U patent/CN207074519U/en not_active Expired - Fee Related
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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: 20180306 Termination date: 20190418 |