CN107045072A - A kind of device for measuring flow speed of gas - Google Patents
A kind of device for measuring flow speed of gas Download PDFInfo
- Publication number
- CN107045072A CN107045072A CN201710160565.XA CN201710160565A CN107045072A CN 107045072 A CN107045072 A CN 107045072A CN 201710160565 A CN201710160565 A CN 201710160565A CN 107045072 A CN107045072 A CN 107045072A
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- CN
- China
- Prior art keywords
- stereoplasm tube
- flexible pipe
- atmospheric pressure
- baroceptor
- tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a kind of device for measuring flow speed of gas, include stereoplasm tube, flexible pipe, hermetic collar and baroceptor, stereoplasm tube is set in flexible pipe periphery, hermetic collar has two, it is located at the two ends of stereoplasm tube respectively, an atmospheric pressure cavity is formed between stereoplasm tube, flexible pipe and hermetic collar, and stereoplasm tube and flexible pipe are not in contact with each other；Baroceptor includes a probe, and baroceptor is located at the outside of stereoplasm tube, and the tube wall of probe through the stereoplasm tube of baroceptor is arranged at the air pressure size in atmospheric pressure cavity to detect air pressure intracavitary.The present invention measures the gas flow rate by flexible tube by measuring the air pressure size in atmospheric pressure cavity indirectly, therefore will not produce influence to the gas flow rate of flexible tube；The probe of baroceptor is located in atmospheric pressure cavity, and the gas flow rate flowed through in flexible pipe will not be impacted to probe, so as to reduce measurement error.
Description
Technical field
The present invention relates to gas flow rate field of measuring technique, more particularly to a kind of device for measuring flow speed of gas.
Background technology
The occasions such as detection and draught fan performance test now for general field pipes gas flow rate, are required for gas flow rate
Measurement apparatus.The data of gas flow rate will be related in inflation or deflation course, gas is adjusted by gas flow rate
The velocity magnitude of charge and discharge, therefore adjustment inflation/deflation speed is accomplished by the parameter of gas flow rate.
The device for measuring flow speed of gas that prior art is used, such as with L shapes standard pitot tube as key instrument, to wind
The requirement of speed is very high, and different instruments can only often correspond to extremely narrow interval flow velocity, and the measurement accuracy to a wide range of flow velocity is not high；
Other device for measuring flow speed of gas are complicated, and size is big, is also unfavorable for execute-in-place, uses.
The content of the invention
Not enough for more than, the present invention provides a kind of measurement accuracy simple in construction high device for measuring flow speed of gas.
To reach above-mentioned purpose, the present invention is adopted the following technical scheme that：
A kind of device for measuring flow speed of gas, includes stereoplasm tube, flexible pipe, hermetic collar and baroceptor, the stereoplasm tube
The flexible pipe periphery is set in, the hermetic collar there are two, respectively positioned at the two ends of the stereoplasm tube, the stereoplasm tube,
An atmospheric pressure cavity is formed between flexible pipe and hermetic collar, and the stereoplasm tube and flexible pipe are not in contact with each other；The air pressure sensing
Device includes a probe, and the baroceptor is located at the outside of the stereoplasm tube, the probe of the baroceptor through
The tube wall of the stereoplasm tube is arranged in the atmospheric pressure cavity to detect the air pressure size in the atmospheric pressure cavity.
It is preferred that, device for measuring flow speed of gas also includes air injection pipe, and described air injection pipe one end passes through the stereoplasm tube
Tube wall connects and is additionally provided with the first air valve in the atmospheric pressure cavity, the air injection pipe, and first air valve is arranged at the atmospheric pressure cavity
It is outside.
It is preferred that, a trachea is circumscribed with each hermetic collar, one second is provided with each trachea
Air valve.
It is preferred that, the flexible pipe is made up of polyvinyl chloride or polyethylene or rubber, the thickness of the flexible pipe for 0.2 ~
1mm。。
It is preferred that, the hard tube outer surface is coated with one layer of thermal insulation layer, and the thermal insulation layer is by metallized film or aluminizes poly-
Ester film or Kapton of aluminizing are made.
It is preferred that, the axis of the stereoplasm tube and the flexible pipe is overlapped, between the stereoplasm tube and the flexible pipe
Distance be 0.5 ~ 2cm.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, the present invention is by measuring between stereoplasm tube and flexible pipe（In atmospheric pressure cavity）Air pressure size come measure indirectly by flexibility
Gas flow rate inside pipe, therefore influence will not be produced on the gas flow rate of flexible tube；
2nd, the probe of the baroceptor in the present invention is located between stereoplasm tube and flexible pipe（In atmospheric pressure cavity）, flow through in flexible pipe
Gas flow rate probe will not be impacted, and the probe of baroceptor can be protected well；
3rd, stereoplasm tube of the invention can reduce shadow of the ambient temperature to gas atmosphere in atmospheric pressure cavity covered with one layer of thermal insulation layer
Ring；
4th, the present invention is provided with air injection pipe, by increasing capacitance it is possible to increase and reduce the atmospheric pressure value inside atmospheric pressure cavity, the accuracy of measurement can be adjusted；
5th, the present invention is simple in construction, and both sides trachea size is identical, when in use without considering closure problem, uses
It is convenient.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, being used required in being described below to embodiment
Accompanying drawing be briefly described.
Fig. 1 is structural representation of the invention.
Wherein, it is labeled as shown in figure：1：Stereoplasm tube；2：Flexible pipe；3：Hermetic collar；4：Atmospheric pressure cavity；5：Air pressure sensing
Device；51：Probe；6：Air injection pipe；7：First air valve；8：Trachea；9：Second air valve；10：Thermal insulation layer.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described.Obviously, described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Embodiment
Fig. 1 is refer to, the present invention provides a kind of device for measuring flow speed of gas, mainly include stereoplasm tube 1, flexible pipe 2, sealing card
Set 3 and baroceptor 5.
As shown in figure 1, stereoplasm tube 1 is set in the periphery of flexible pipe 2, the axis coincidence of stereoplasm tube 1 and flexible pipe 2, sealing
Cutting ferrule 3 has two, respectively positioned at the two ends of stereoplasm tube 1, and an air pressure is formed between stereoplasm tube 1, flexible pipe 2 and hermetic collar 3
Chamber 4, and stereoplasm tube 1 and flexible pipe 2 be not in contact with each other, distance is 1cm between stereoplasm tube 1 and flexible pipe 2.Stereoplasm tube 1, flexible pipe 2
It is sealed to each other between hermetic collar 3, portion gas is filled with atmospheric pressure cavity 4, certain air pressure is formed.The hardness of stereoplasm tube 1 compared with
Greatly, preferably manufactured by stainless steel material, hermetic collar 3 is made up of hard material, is preferably made up of rigid plastics, therefore, hard
The pressure that the air pressure change to be formed that pipe 1 and hermetic collar 3 flows through for air-flow is caused is undeformed.The outer surface of stereoplasm tube 1 is coated with
One layer of thermal insulation layer 10, the material of thermal insulation layer 10 can be metallized film or aluminized mylar or Kapton of aluminizing, coating
One layer of thermal insulation layer 10 can reduce influence of the ambient temperature to gas atmosphere in atmospheric pressure cavity 4.Flexible pipe 2 is fabricated from a flexible material,
It is preferred that being made up of polyvinyl chloride or polyethylene or rubber, the thickness of flexible pipe 2 is 0.2mm, and flexible pipe 2 flows through to be formed for air-flow
The pressure deformation that causes of air pressure change it is larger, therefore when air-flow passes through, flexible pipe 2 deforms upon then change atmospheric pressure cavity 4
Interior atmospheric pressure value.Baroceptor 5 includes a probe 51, and baroceptor 5 is located at the outside of stereoplasm tube 1, air pressure sensing
The tube wall of the probe 51 of device 5 through stereoplasm tube 1 is arranged in atmospheric pressure cavity 4 to detect the air pressure size in atmospheric pressure cavity 4.Air pressure transmission
Display screen or indicator is provided with sensor 5 to represent the atmospheric pressure value detected.Device for measuring flow speed of gas also includes gas injection
Pipe 6, one end of air injection pipe 6 connects through the tube wall of stereoplasm tube 1 and is additionally provided with the first air valve 7, the first gas in atmospheric pressure cavity 4, air injection pipe 6
Valve 7 is arranged at outside atmospheric pressure cavity 4.Realized by opening the first air valve 7 to inflate or deflate to atmospheric pressure cavity 4 in atmospheric pressure cavity 4
The change of portion's air pressure, to adjust the accuracy of measurement, and enables the invention to the test suitable for different air-flows.During test, note
The first air valve 7 on tracheae 6 is closed.Baroceptor 5 and air injection pipe 6 and the connection of stereoplasm tube 1 are fine and close, and the first air valve
7 air-tightness will get well, to ensure the compactness of atmospheric pressure cavity 4, it is ensured that the precision of measurement.One is circumscribed with each hermetic collar 3
Second air valve 9 is provided with trachea 8, the connection flexible pipe 2 of trachea 8, each trachea 8.Trachea 8 is to aid in dress
The connection with external pipe is put, in use, trachea 8 can be connected with external pipe and substitute in the situation for not having trachea 8
The connected mode that lower hermetic collar 3 and flexible pipe 2 are directly connected with external pipe, the second air valve 9 of regulation can adjust air-flow
Flow velocity.Two sizes of trachea 8 are consistent, therefore are easy to use when in use without considering closure problem.
The present invention operation principle be：Inside airflow passes flexible pipe 2 so that flexible pipe 2 produces deformation, so as to change gas
The air pressure inside of chamber 4 is pressed, the air pressure size in atmospheric pressure cavity 4 is measured by the probe 51 of baroceptor 5, and pass through baroceptor
5 displays.When no air-flow flows through inside flexible pipe 2, now air flow velocity is 0, and now baroceptor 5 is shown
Atmospheric pressure value is zeroed to show the flow velocity of 0 value size now；When there is air-flow to be flowed through inside flexible pipe 2, according to hydrodynamics
The gas of flowing reduces to the pressure of the tube wall of the inner side of flexible pipe 2 in the small principle of the middle big pressure of flow velocity, flexible pipe 2 so that gas
Press the gas that gas is more than flowing to the pressure of the tube wall of flexible pipe 2 in chamber 4 to the pressure of the tube wall of flexible pipe 2, cause flexible pipe 2 to receive
Contracting, thus the increase of the inner volume of atmospheric pressure cavity 4, air pressure reduces, when the timing of flow velocity one, and the air pressure pressure of the tube wall both sides of flexible pipe 2 reaches
Balance, the value that now baroceptor 5 is measured is converted to current air flow velocity.Conversion herein can pass through the past dress in design
The gas of specific flow velocity is passed through in putting, the corresponding atmospheric pressure value that baroceptor 5 is shown is converted to known flow speed value.The present invention is logical
The air pressure size crossed in measurement atmospheric pressure cavity 4 is measured by the gas flow rate inside flexible pipe 2 indirectly, will not be in flexible pipe 2
The gas flow rate in portion produces influence；The probe 51 of baroceptor 5 is located in atmospheric pressure cavity 4, the gas flow rate flowed through in flexible pipe 2
Probe 51 will not be impacted, so as to reduce measurement error, and probe 51 can be protected well.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, the change or replacement that can be readily occurred in, all should
It is included within the scope of the present invention.Therefore, protection scope of the present invention should using the scope of the claims as
It is accurate.
Claims (6)
1. a kind of device for measuring flow speed of gas, it is characterised in that：Include stereoplasm tube（1）, flexible pipe（2）, hermetic collar（3）With
Baroceptor（5）, the stereoplasm tube（1）It is set in the flexible pipe（2）Periphery, the hermetic collar（3）There are two, respectively
Positioned at the stereoplasm tube（1）Two ends, the stereoplasm tube（1）, flexible pipe（2）And hermetic collar（3）Between formed an air pressure
Chamber（4）, and the stereoplasm tube（1）And flexible pipe（2）It is not in contact with each other；The baroceptor（5）Include a probe（51）,
The baroceptor（5）Positioned at the stereoplasm tube（1）Outside, the baroceptor（5）Probe（51）Through described
Stereoplasm tube（1）Tube wall be arranged at the atmospheric pressure cavity（4）It is interior to detect the atmospheric pressure cavity（4）Interior air pressure size.
2. device for measuring flow speed of gas according to claim 1, it is characterised in that：Also include air injection pipe（6）, the note
Tracheae（6）One end passes through the stereoplasm tube（1）Tube wall connect the atmospheric pressure cavity（4）, the air injection pipe（6）On be additionally provided with
One air valve（7）, first air valve（7）It is arranged at the atmospheric pressure cavity（4）It is outside.
3. device for measuring flow speed of gas according to claim 1, it is characterised in that：Each hermetic collar（3）It is upper outer
It is connected to a trachea（8）, each trachea（8）On be provided with second air valve（9）.
4. device for measuring flow speed of gas according to claim 1, it is characterised in that：The flexible pipe（2）By polyvinyl chloride
Or polyethylene or rubber are made, the flexible pipe（2）Thickness be 0.2 ~ 1mm.
5. device for measuring flow speed of gas according to claim 1, it is characterised in that：The stereoplasm tube（1）Outer surface is coated
There is one layer of thermal insulation layer（10）, the thermal insulation layer（10）By metallized film or aluminized mylar or Kapton system of aluminizing
Into.
6. device for measuring flow speed of gas according to claim 1, it is characterised in that：The stereoplasm tube（1）With the flexibility
Pipe（2）Axis overlap, the stereoplasm tube（1）With the flexible pipe（2）The distance between be 0.5 ~ 2cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710160565.XA CN107045072A (en) | 2017-03-17 | 2017-03-17 | A kind of device for measuring flow speed of gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710160565.XA CN107045072A (en) | 2017-03-17 | 2017-03-17 | A kind of device for measuring flow speed of gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107045072A true CN107045072A (en) | 2017-08-15 |
Family
ID=59545109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710160565.XA Pending CN107045072A (en) | 2017-03-17 | 2017-03-17 | A kind of device for measuring flow speed of gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107045072A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110450503A (en) * | 2019-07-23 | 2019-11-15 | 深圳市沃尔核材股份有限公司 | The production method of gas detecting tube |
| CN116223445A (en) * | 2023-05-05 | 2023-06-06 | 安徽中科智泰光电测控科技有限公司 | Underground multi-gas detector and detection system for mine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0337092A2 (en) * | 1988-04-09 | 1989-10-18 | Labionics Aktiengesellschaft | Flowmeter for fluids |
| US5672832A (en) * | 1996-02-15 | 1997-09-30 | Nt International, Inc. | Chemically inert flow meter within caustic fluids having non-contaminating body |
| US20060123933A1 (en) * | 2002-08-27 | 2006-06-15 | Braaten Nils A | Flow measuring method and device |
| CN104374948A (en) * | 2014-11-14 | 2015-02-25 | 无锡信大气象传感网科技有限公司 | Wind pressure type anemograph |
| CN205228574U (en) * | 2015-11-06 | 2016-05-11 | 王婷婷 | Object dynamic monitoring device based on air pressure sensing |
| CN206609894U (en) * | 2017-03-17 | 2017-11-03 | 广西电网有限责任公司电力科学研究院 | A kind of device for measuring flow speed of gas |
-
2017
- 2017-03-17 CN CN201710160565.XA patent/CN107045072A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0337092A2 (en) * | 1988-04-09 | 1989-10-18 | Labionics Aktiengesellschaft | Flowmeter for fluids |
| US5672832A (en) * | 1996-02-15 | 1997-09-30 | Nt International, Inc. | Chemically inert flow meter within caustic fluids having non-contaminating body |
| US20060123933A1 (en) * | 2002-08-27 | 2006-06-15 | Braaten Nils A | Flow measuring method and device |
| CN104374948A (en) * | 2014-11-14 | 2015-02-25 | 无锡信大气象传感网科技有限公司 | Wind pressure type anemograph |
| CN205228574U (en) * | 2015-11-06 | 2016-05-11 | 王婷婷 | Object dynamic monitoring device based on air pressure sensing |
| CN206609894U (en) * | 2017-03-17 | 2017-11-03 | 广西电网有限责任公司电力科学研究院 | A kind of device for measuring flow speed of gas |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110450503A (en) * | 2019-07-23 | 2019-11-15 | 深圳市沃尔核材股份有限公司 | The production method of gas detecting tube |
| CN116223445A (en) * | 2023-05-05 | 2023-06-06 | 安徽中科智泰光电测控科技有限公司 | Underground multi-gas detector and detection system for mine |
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