CN113238074A - Pitot tube wind speed and direction measuring method based on sextant method - Google Patents
Pitot tube wind speed and direction measuring method based on sextant method Download PDFInfo
- Publication number
- CN113238074A CN113238074A CN202110540519.9A CN202110540519A CN113238074A CN 113238074 A CN113238074 A CN 113238074A CN 202110540519 A CN202110540519 A CN 202110540519A CN 113238074 A CN113238074 A CN 113238074A
- Authority
- CN
- China
- Prior art keywords
- wind
- wind speed
- pitot tube
- beta
- pressure
- 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.)
- Granted
Links
Images
Classifications
-
- 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
- G01P5/14—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring differences of pressure in the fluid
- G01P5/16—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring differences of pressure in the fluid using Pitot tubes, e.g. Machmeter
-
- 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
- G01P5/14—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring differences of pressure in the fluid
- G01P5/16—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring differences of pressure in the fluid using Pitot tubes, e.g. Machmeter
- G01P5/165—Arrangements or constructions of Pitot tubes
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
Abstract
The invention discloses a pitot tube wind speed and direction measuring method based on a sextant method, which comprises the following steps: calculating the Reynolds number of a flow field in a working environment when the wind speed is measured by the pitot tube, and obtaining that the pitot tube cylindrical streaming belongs to subcritical streaming according to the Reynolds number range; the subcritical turbulent flow pressure curve is matched with the ideal curve; measuring wind speed and wind direction by adopting 6 pitot tubes; let the dynamic pressure of each pitot tube be P1，P2，P3，P4，P5And P6(ii) a Selecting a maximum wind pressure value Pi, and comparing two pitot tube dynamic pressure values adjacent to the Pi to select an absolute value maximum value Pj; assuming the incoming wind speed and the maximum wind pressure value PiThe included angle of the position of the pipe is theta, and the wind speed dynamic pressure value P and the included angle theta are calculated; step 6, calculating a wind speed value through a formula according to a pitot tube speed measuring principle; calculating a wind direction angle beta according to the included angle theta to obtain a wind direction according to the wind direction beta; solves the problem that the prior art can not accurately measure the instantaneous wind speed and direction of natural windAnd the like.
Description
Technical Field
The invention belongs to the technical field of wind speed measurement, and particularly relates to a pitot tube wind speed and direction measuring method based on a sextant method.
Technical Field
Wind is a natural phenomenon formed by overlapping a plurality of small-scale pulses which randomly change in time and space, and is also a vector on large-scale regular airflow, and mainly comprises 2 parameters of wind speed and wind direction angle. As a common natural phenomenon, accurate measurement of wind is playing an increasingly important role in the fields of industry, weather and shipping, etc. Whether the meteorological application or the wind energy utilization is adopted, the primary task is to accurately obtain wind vector information. The design of the high-quality wind vector measuring instrument provides powerful data for meteorological application and wind energy utilization.
In recent years, wind parameter measurement technologies based on the pitot tube principle are becoming more mature, and compared with wind measurement technologies based on mechanical, thermal sensitive, laser doppler and the like, the wind parameter measurement technologies have the advantages of simple structure, convenience in manufacturing, low price, wide measurement range, high accuracy and good resolution in high wind speed measurement, and the like, and thus are gaining wide attention. However, the existing pitot tube principle-based wind direction measurement can only measure the directional wind direction and cannot measure the instantaneous wind speed and direction of natural wind and the like; the measurement of transient wind has important significance for improving the utilization efficiency of wind energy and monitoring the icing environment parameters of the power transmission line; therefore, the utilization efficiency of wind energy cannot be improved, the icing environmental parameters of the power transmission line can be monitored, and the safe and stable operation of the power transmission line system is ensured.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the pitot tube wind speed and direction measuring method based on the sextant method is provided to solve the technical problems that the prior art cannot accurately measure the instantaneous wind speed and direction of natural wind and the like.
The technical scheme of the invention is as follows:
a pitot tube wind speed and direction measuring method based on a sextant method comprises the following steps:
The method for calculating the Reynolds number of the flow field under the working environment when the wind speed is measured by the pitot tube according to the Reynolds number calculation formula and obtaining that the pitot tube cylindrical streaming belongs to subcritical streaming according to the Reynolds number range comprises the following steps: according to Reynolds number ReRho Vd/mu, V, rho and mu are respectively the flow velocity, density and viscosity coefficient of air, d is a characteristic length, and rho is 1.293kg/cm at 20 DEG C3mu.18.1X 10-6kg/(m · s), substituting the formula 857V; when the wind speed ranges from 5m/s to 40m/s, Re4285-34280, belonging to subcritical streaming; the ideal fluid is a non-compressible, non-viscous fluid.
when ideal parallel flow of fluid flows without annular volume around the cylinder, the speed V of the surface of the cylinderδThe distribution rule is as follows:
Vδ＝-2V∞sinθ (1)
when ideal parallel fluid flows around the cylinder in an acyclic quantity, the pressure P at any point on the surface of the cylinderAll-purposeDerived from bernoulli's equation:
in the formula: p∞The pressure of the fluid at infinity; v∞Flow rate of fluid at infinity; ρ is the air density;
engineering dimensionless pressure coefficient CPTo indicate the pressure of the liquid at any point on the object, by(1-2) obtaining a theoretical pressure coefficient flowing around the cylinder:
the arrangement mode of the 6 pitot tubes is as follows: the 6 pitot tubes were arranged in a plane at 60 °.
The calculation formula of the wind speed dynamic pressure value P and the included angle theta is as follows:
Pi＝P·Cp(θ)＝P·(1-4sin2θ) (4)
Pj＝P·Cp(60°-θ)＝P·[1-4sin2(60°-θ)] (5)
calculating the wind speed dynamic pressure value P and the included angle theta by the formulas (4-5).
the wind speed sensor measures the wind speed by adopting a pitot tube speed measurement principle; the pitot tube is made of two branch tubes, one is a full pressure end, and the other is a static pressure end;
according to the Bernoulli equation, the dynamic pressure is equal to the difference between the full pressure and the static pressure; the dynamic pressure is proportional to the square of the velocity, and the wind speed is calculated by the formula:
in the formula: v is wind speed, unit m/s; pGeneral assembly、P0Total pressure and static pressure are expressed in Pa; rho is the air density in kg/m3。
The method for obtaining the wind direction according to the wind direction angle beta comprises the following steps:
if beta is equal to 0 degrees, the wind direction is north wind; if beta is 45 degrees, the wind direction is northeast wind; if 0< beta <45 ° or 45 ° < beta <90 °, the wind direction is north east offset beta °;
if beta is 90 degrees, the wind direction is east wind; if beta is 135 degrees, the wind direction is southeast wind; if 90 ° < β <135 ° or 135 ° < β <180 °, the wind direction is east partial south (β -90) °.
The method for obtaining the wind direction according to the wind direction angle beta comprises the following steps:
if beta is 180 degrees, the wind direction is south wind; if beta is 225 degrees, the wind direction is southwest wind; if 180 ° < β <225 ° or 225 ° < β <270 °, the wind direction is southward-West (β -180) °;
if beta is 270 degrees, the wind direction is west wind; if beta is 315 degrees, the wind direction is northwest wind; if 270 ° < β <315 ° or 315 ° < β <360 °, the wind direction is north west (β -270) °.
The invention has the beneficial effects that:
according to the invention, the instantaneous wind speed and direction of natural wind can be accurately measured, the utilization efficiency of wind energy can be improved, the icing environment parameters of the power transmission line can be monitored, and the safe and stable operation of the power transmission line system is ensured; the technical problems that the prior art cannot accurately measure the instantaneous wind speed and the instantaneous wind direction of natural wind and the like are solved.
Description of the drawings:
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic diagram of the pressure distribution on the surface of a cylinder;
FIG. 3 is a schematic diagram of a 6 Pitot tube arrangement.
The specific implementation mode is as follows:
the invention is described in further detail below with reference to the drawings, in which:
the invention provides a pitot tube wind speed and direction measuring method based on a sextant method, which comprises the following steps of:
s1, calculating the Reynolds number of a flow field in a working environment when the wind speed is measured by the pitot tube according to a Reynolds number calculation formula, and obtaining the subcritical streaming of the pitot tube cylindrical streaming according to the Reynolds number range.
According to Reynolds number ReWhere V, ρ, and μ are the flow velocity, density, and viscosity coefficient of air, respectively, and d is a characteristic length, and 12mm is taken. Rho is 1.293kg/cm at 20 DEG C3mu.18.1X 10-6kg/(m · s) is substituted into the formula to obtain 857V. When the wind speed ranges from 5m/s to 40m/s, Re4285-34280, belonging to subcritical circumfluence. The ideal fluid is a non-compressible, non-viscous fluid.
S2, according to fluid forceThe principle of theory, the pressure distribution on the surface of the cylinder is shown in fig. 2. According to FIG. 2, it can be known from the pressure distribution curve of the cylindrical surface that when the included angle between the opening direction of the pitot tube and the wind direction is in the range of 0-60 degrees, the subcritical turbulent pressure curve is substantially identical to the ideal curve. C in FIG. 2PThe pressure coefficient is dimensionless and represents the pressure of the fluid acting on any point on the object.
Velocity V of cylinder surface when ideal fluid parallel flow flows without circulation around assistanceδThe distribution rule is as follows:
Vδ＝-2V∞sinθ (1)
pressure P at any point on the surface of the cylinder when ideal fluid parallel flow flows without circulation around the aidAll-purposeIt can be derived from bernoulli's equation:
in the formula: p∞The pressure of the fluid at infinity; v∞Flow rate of fluid at infinity; ρ is the air density.
Pressure coefficient C used to dimensionless in engineeringPThe pressure of any point of the liquid acting on the object is expressed, and the theoretical pressure coefficient of the liquid flowing around the cylinder can be obtained by the following formula (1-2):
s3, according to S2, the wind speed and the wind direction can be accurately measured by adopting 6 pitot tubes, so that the wind speed and the wind direction can be measured by designing 6 pitot tubes, and the arrangement mode of the 6 pitot tubes is shown in figure 3.
S4, according to the graph 3, the dynamic pressure of each pitot tube is set to be P1，P2，P3，P4，P5，P6. Comparison P1，P2，P3，P4，P5，P6Selecting a maximum value Pi, comparing dynamic pressure values of two pitot tubes adjacent to Pi to select an absolute valueMaximum value Pj of value (if the maximum value is P)1Comparison of P2、P6Choosing the larger value of the absolute value as Pj).
S5, assuming the incoming flow wind speed and the maximum wind pressure value PiThe included angle between the position of the pipe and the second high wind pressure value P is thetajThe included angle of the tube is (60-theta), as shown in figure 3, there is
Pi＝P·Cp(θ)＝P·(1-4sin2θ) (4)
Pj＝P·Cp(60°-θ)＝P·[1-4sin2(60°-θ)] (5)
The wind speed dynamic pressure P and the included angle theta can be calculated by the formulas (4-5).
And S6, according to the pitot tube speed measurement principle, calculating a wind speed value through the formula (6).
The wind speed sensor measures the wind speed by adopting a pitot tube speed measurement principle. The pitot tube is made of two tubes, one is a full pressure end and the other is a static pressure end.
According to the bernoulli equation, the dynamic pressure is equal to the difference between the full pressure and the static pressure. The dynamic pressure is proportional to the square of the velocity, and the wind speed is calculated as follows:
wherein, V: wind speed, unit m/s; pGeneral assembly、P0: total pressure, static pressure, unit Pa; ρ: air Density in kg/m3。
S7, when j is i +1, β is θ + (i-1) × 60 °; when j is i-1, beta is 60-theta; when i is 1 and j is 6, beta is 360-theta; when i is 6 and j is 1, β is θ +300 °; the wind speed angle beta can be calculated.
If beta is equal to 0 degrees, the wind direction is north wind; if beta is 45 degrees, the wind direction is northeast wind; if 0< beta <45 ° or 45 ° < beta <90 °, the wind direction is north east offset beta °;
if beta is 90 degrees, the wind direction is east wind; if beta is 135 degrees, the wind direction is southeast wind; if 90 ° < β <135 ° or 135 ° < β <180 °, the wind direction is east partial south (β -90) °;
if beta is 180 degrees, the wind direction is south wind; if beta is 225 degrees, the wind direction is southwest wind; if 180 ° < β <225 ° or 225 ° < β <270 °, the wind direction is southward-West (β -180) °;
if beta is 270 degrees, the wind direction is west wind; if beta is 315 degrees, the wind direction is northwest wind; if 270 ° < β <315 ° or 315 ° < β <360 °, the wind direction is north west (β -270) °.
Specifically, the method comprises the following steps: wind is a natural phenomenon formed by overlapping a plurality of small-scale pulses which randomly change in time and space, and is also a vector on large-scale regular airflow, and mainly comprises 2 parameters of wind speed and wind direction angle. As a common natural phenomenon, accurate measurement of wind is playing an increasingly important role in the fields of industry, weather and shipping, etc. Whether the meteorological application or the wind energy utilization is adopted, the primary task is to accurately obtain wind vector information. The design of the high-quality wind vector measuring instrument provides powerful data for meteorological application and wind energy utilization.
It is difficult to accurately measure the wind speed and direction, and therefore, an effective technical means is needed to accurately measure the instantaneous wind speed and direction of natural wind.
The invention relates to a pitot tube wind speed and direction measuring method based on a sextant method.
Claims (8)
1. A pitot tube wind speed and direction measuring method based on a sextant method comprises the following steps:
step 1, calculating the Reynolds number of a flow field in a working environment when the wind speed is measured by a pitot tube according to a Reynolds number calculation formula, and obtaining that the pitot tube cylindrical streaming belongs to subcritical streaming according to the Reynolds number range;
step 2, calculating the pressure of the fluid acting on any point on the cylinder; obtaining a subcritical turbulent flow pressure curve to be consistent with an ideal curve when the included angle between the opening direction of the pitot tube and the wind direction is in the range of 0-60 degrees according to the pressure distribution curve of the cylindrical surface;
step 3, adopting 6 pitot tubes to measure wind speed and wind direction according to the result of the step 2;
step 4, setting the dynamic pressure of each pitot tube as P1，P2，P3，P4，P5And P6(ii) a Comparison P1，P2，P3，P4，P5And P6Selecting a maximum wind pressure value Pi, and comparing two pitot tube dynamic pressure values adjacent to the Pi to select an absolute value maximum value Pj;
step 5, assuming the incoming flow wind speed and the maximum wind pressure value PiThe included angle between the position of the pipe and the second high wind pressure value P is thetajThe included angle of the position of the pipe is (60-theta), and the dynamic pressure value P of the wind speed and the included angle theta are calculated;
step 6, calculating a wind speed value through a formula according to a pitot tube speed measuring principle;
step 7, calculating a wind direction angle beta according to the included angle theta, wherein when j is equal to i +1, beta is equal to theta + (i-1) 60 degrees; when j is i-1, beta is 60-theta; when i is 1 and j is 6, beta is 360-theta; when i is 6 and j is 1, β is θ +300 °; and obtaining the wind direction according to the wind direction beta.
2. The wind speed and direction measurement method based on the sextant pitot tube of claim 1, wherein the wind speed and direction measurement method comprises the following steps: the method for calculating the Reynolds number of the flow field under the working environment when the wind speed is measured by the pitot tube according to the Reynolds number calculation formula and obtaining that the pitot tube cylindrical streaming belongs to subcritical streaming according to the Reynolds number range comprises the following steps: according to Reynolds number ReRho Vd/mu, V, rho and mu are respectively the flow velocity, density and viscosity coefficient of air, d is a characteristic length, and rho is 1.293kg/cm at 20 DEG C3mu.18.1X 10-6kg/(m · s), substituting the formula 857V; when the wind speed ranges from 5m/s to 40m/s, Re4285-34280, belonging to subcritical streaming; the ideal fluid is a non-compressible, non-viscous fluid.
3. The wind speed and direction measurement method based on the sextant pitot tube of claim 1, wherein the wind speed and direction measurement method comprises the following steps: step 2, the method for calculating the pressure of the fluid acting on any point on the cylinder comprises the following steps:
when ideal parallel flow of fluid flows without annular volume around the cylinder, the speed V of the surface of the cylinderδThe distribution rule is as follows:
Vδ＝-2V∞sinθ (1)
when ideal parallel fluid flows around the cylinder in an acyclic quantity, the pressure P at any point on the surface of the cylinderAll-purposeDerived from bernoulli's equation:
in the formula: p∞The pressure of the fluid at infinity; v∞Flow rate of fluid at infinity; ρ is the air density;
engineering dimensionless pressure coefficient CPThe pressure of any point of the liquid acting on the object is expressed, and the theoretical pressure coefficient flowing around the cylinder is obtained by the following formula (1-2):
4. the wind speed and direction measurement method based on the sextant pitot tube of claim 1, wherein the wind speed and direction measurement method comprises the following steps: the arrangement mode of the 6 pitot tubes is as follows: the 6 pitot tubes were arranged in a plane at 60 °.
5. The wind speed and direction measurement method based on the sextant pitot tube of claim 1, wherein the wind speed and direction measurement method comprises the following steps: the calculation formula of the wind speed dynamic pressure value P and the included angle theta is as follows:
Pi＝P·Cp(θ)＝P·(1-4sin2θ) (4)
Pj＝P·Cp(60°-θ)＝P·[1-4sin2(60°-θ)] (5)
calculating the wind speed dynamic pressure value P and the included angle theta by the formulas (4-5).
6. The wind speed and direction measurement method based on the sextant pitot tube of claim 1, wherein the wind speed and direction measurement method comprises the following steps: step 6, according to the pitot tube speed measurement principle, the method for calculating the wind speed value by a formula comprises the following steps: the wind speed sensor measures the wind speed by adopting a pitot tube speed measurement principle; the pitot tube is made of two branch tubes, one is a full pressure end, and the other is a static pressure end;
according to the Bernoulli equation, the dynamic pressure is equal to the difference between the full pressure and the static pressure; the dynamic pressure is proportional to the square of the velocity, and the wind speed is calculated by the formula:
in the formula: v is wind speed, unit m/s; pGeneral assembly、P0Total pressure and static pressure are expressed in Pa; rho is the air density in kg/m3。
7. The wind speed and direction measurement method based on the sextant pitot tube of claim 1, wherein the wind speed and direction measurement method comprises the following steps: the method for obtaining the wind direction according to the wind direction angle beta comprises the following steps:
if beta is equal to 0 degrees, the wind direction is north wind; if beta is 45 degrees, the wind direction is northeast wind; if 0< beta <45 ° or 45 ° < beta <90 °, the wind direction is north east offset beta °;
if beta is 90 degrees, the wind direction is east wind; if beta is 135 degrees, the wind direction is southeast wind; if 90 ° < β <135 ° or 135 ° < β <180 °, the wind direction is east partial south (β -90) °.
8. The wind speed and direction measurement method based on the sextant pitot tube of claim 1, wherein the wind speed and direction measurement method comprises the following steps: the method for obtaining the wind direction according to the wind direction angle beta comprises the following steps:
if beta is 180 degrees, the wind direction is south wind; if beta is 225 degrees, the wind direction is southwest wind; if 180 ° < β <225 ° or 225 ° < β <270 °, the wind direction is southward-West (β -180) °;
if beta is 270 degrees, the wind direction is west wind; if beta is 315 degrees, the wind direction is northwest wind; if 270 ° < β <315 ° or 315 ° < β <360 °, the wind direction is north west (β -270) °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110540519.9A CN113238074B (en) | 2021-05-18 | 2021-05-18 | Pitot tube wind speed and direction measuring method based on sextant method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110540519.9A CN113238074B (en) | 2021-05-18 | 2021-05-18 | Pitot tube wind speed and direction measuring method based on sextant method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113238074A true CN113238074A (en) | 2021-08-10 |
| CN113238074B CN113238074B (en) | 2023-01-06 |
Family
ID=77135026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110540519.9A Active CN113238074B (en) | 2021-05-18 | 2021-05-18 | Pitot tube wind speed and direction measuring method based on sextant method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113238074B (en) |
Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB757829A (en) * | 1954-05-07 | 1956-09-26 | Kollsman Instr Corp | Pitot tube anemometer |
| DE2557631A1 (en) * | 1975-12-20 | 1977-06-23 | Willy Prof Dr Ing Neuerburg | Pitot tube type anemometer - measures wind velocity and direction using differential pressure transducer and rotary potentiometer |
| FR2416454A1 (en) * | 1978-02-01 | 1979-08-31 | Vicard Pierre G | Wind intensity and direction measurement on sailing boat - employing dynamometric gauge for wind force, with pitot tubes sensing direction |
| EP0158664A1 (en) * | 1983-09-30 | 1985-10-23 | Rosemount Inc | Apparatus for correcting barometric pressure for wind velocity and direction. |
| JPH05288761A (en) * | 1992-04-06 | 1993-11-02 | Natl Aerospace Lab | Detecting system of vector of flying speed using pitot-tube type probe of frustum of pyramid and pitot-tube type probe of frustum of pyramid |
| GB0120492D0 (en) * | 2001-08-23 | 2001-10-17 | L M Technical Services Ltd | Pitot flow meters |
| JP2005003678A (en) * | 2003-05-20 | 2005-01-06 | Nippon Applied Flow Kk | Flow measuring instrument, flow rate measuring instrument, and flow rate instrumentation method |
| AU2005225666A1 (en) * | 2004-03-26 | 2005-10-06 | Romo Wind Ag | Method and apparatus to determine the wind speed and direction experienced by a wind turbine |
| GB0520784D0 (en) * | 2005-10-13 | 2005-11-23 | Shields James A | Method and apparatus for determining the speed and direction of movement of a fluid relative to a body |
| KR20060016557A (en) * | 2004-08-18 | 2006-02-22 | 한국과학기술원 | Pitot tube and flow velocity measurement method and system using it |
| JP2007093321A (en) * | 2005-09-28 | 2007-04-12 | Is Kogyosho:Kk | Sensor structure |
| CN102298072A (en) * | 2011-05-26 | 2011-12-28 | 南京信息工程大学 | High precision wind measuring device with micro-differential pressure type and method thereof |
| JP4955132B1 (en) * | 2011-06-30 | 2012-06-20 | パイオニア株式会社 | Wind detector |
| CN203084004U (en) * | 2013-03-19 | 2013-07-24 | 姜旭 | Plug-in type medium flow velocity sensor with drop-shaped drag reduction function |
| CN103543288A (en) * | 2013-10-21 | 2014-01-29 | 北京瑞赛长城航空测控技术有限公司 | S-shaped pitot tube based wind direction and velocity measurement device and method |
| GB201503149D0 (en) * | 2015-02-25 | 2015-04-08 | Dublin Inst Of Technology | A multi-directional fluid velocity measurement device (FVMD) |
| CN105095589A (en) * | 2015-08-10 | 2015-11-25 | 贵州电网有限责任公司电力科学研究院 | Drawing method of power network wind zone distribution map in mountainous area |
| JP2016145734A (en) * | 2015-02-06 | 2016-08-12 | 国立研究開発法人産業技術総合研究所 | Anemometer and wind direction/wind velocity measuring method |
| CN106779202A (en) * | 2016-12-08 | 2017-05-31 | 贵州电网有限责任公司电力科学研究院 | A kind of wind power forecasting method for considering air humidity |
| US20180372771A1 (en) * | 2017-06-26 | 2018-12-27 | Dwyer Instruments, Inc. | Pitot tube instrument |
| CN109782017A (en) * | 2019-02-21 | 2019-05-21 | 山东公信安全科技有限公司 | Air flow system is surveyed in mine air duct |
| KR102079702B1 (en) * | 2018-11-05 | 2020-02-20 | 한국항공우주연구원 | Blockage ratio controllable Pitot measuring apparatus |
-
2021
- 2021-05-18 CN CN202110540519.9A patent/CN113238074B/en active Active
Patent Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB757829A (en) * | 1954-05-07 | 1956-09-26 | Kollsman Instr Corp | Pitot tube anemometer |
| DE2557631A1 (en) * | 1975-12-20 | 1977-06-23 | Willy Prof Dr Ing Neuerburg | Pitot tube type anemometer - measures wind velocity and direction using differential pressure transducer and rotary potentiometer |
| FR2416454A1 (en) * | 1978-02-01 | 1979-08-31 | Vicard Pierre G | Wind intensity and direction measurement on sailing boat - employing dynamometric gauge for wind force, with pitot tubes sensing direction |
| EP0158664A1 (en) * | 1983-09-30 | 1985-10-23 | Rosemount Inc | Apparatus for correcting barometric pressure for wind velocity and direction. |
| JPH05288761A (en) * | 1992-04-06 | 1993-11-02 | Natl Aerospace Lab | Detecting system of vector of flying speed using pitot-tube type probe of frustum of pyramid and pitot-tube type probe of frustum of pyramid |
| GB0120492D0 (en) * | 2001-08-23 | 2001-10-17 | L M Technical Services Ltd | Pitot flow meters |
| JP2005003678A (en) * | 2003-05-20 | 2005-01-06 | Nippon Applied Flow Kk | Flow measuring instrument, flow rate measuring instrument, and flow rate instrumentation method |
| AU2005225666A1 (en) * | 2004-03-26 | 2005-10-06 | Romo Wind Ag | Method and apparatus to determine the wind speed and direction experienced by a wind turbine |
| KR20060016557A (en) * | 2004-08-18 | 2006-02-22 | 한국과학기술원 | Pitot tube and flow velocity measurement method and system using it |
| JP2007093321A (en) * | 2005-09-28 | 2007-04-12 | Is Kogyosho:Kk | Sensor structure |
| GB0520784D0 (en) * | 2005-10-13 | 2005-11-23 | Shields James A | Method and apparatus for determining the speed and direction of movement of a fluid relative to a body |
| CN102298072A (en) * | 2011-05-26 | 2011-12-28 | 南京信息工程大学 | High precision wind measuring device with micro-differential pressure type and method thereof |
| JP4955132B1 (en) * | 2011-06-30 | 2012-06-20 | パイオニア株式会社 | Wind detector |
| CN203084004U (en) * | 2013-03-19 | 2013-07-24 | 姜旭 | Plug-in type medium flow velocity sensor with drop-shaped drag reduction function |
| CN103543288A (en) * | 2013-10-21 | 2014-01-29 | 北京瑞赛长城航空测控技术有限公司 | S-shaped pitot tube based wind direction and velocity measurement device and method |
| JP2016145734A (en) * | 2015-02-06 | 2016-08-12 | 国立研究開発法人産業技術総合研究所 | Anemometer and wind direction/wind velocity measuring method |
| GB201503149D0 (en) * | 2015-02-25 | 2015-04-08 | Dublin Inst Of Technology | A multi-directional fluid velocity measurement device (FVMD) |
| CN105095589A (en) * | 2015-08-10 | 2015-11-25 | 贵州电网有限责任公司电力科学研究院 | Drawing method of power network wind zone distribution map in mountainous area |
| CN106779202A (en) * | 2016-12-08 | 2017-05-31 | 贵州电网有限责任公司电力科学研究院 | A kind of wind power forecasting method for considering air humidity |
| US20180372771A1 (en) * | 2017-06-26 | 2018-12-27 | Dwyer Instruments, Inc. | Pitot tube instrument |
| KR102079702B1 (en) * | 2018-11-05 | 2020-02-20 | 한국항공우주연구원 | Blockage ratio controllable Pitot measuring apparatus |
| CN109782017A (en) * | 2019-02-21 | 2019-05-21 | 山东公信安全科技有限公司 | Air flow system is surveyed in mine air duct |
Non-Patent Citations (1)
| Title |
|---|
| 张学明 等: "基于皮托管的矿用风向风速传感器的实现", 《北京工业职业技术学院学报》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113238074B (en) | 2023-01-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202304903U (en) | Exact air quantity measuring system | |
| CN108195510A (en) | A kind of hot air wind tunnel calibration method of hot diaphragm type shear stress sensor | |
| CN204832239U (en) | Portable gas velocity measuring device | |
| CN110470860B (en) | Time difference method based ultrasonic anemometer calibration method | |
| CN113238074B (en) | Pitot tube wind speed and direction measuring method based on sextant method | |
| CN113125800B (en) | Wind speed and direction measuring method based on pitot tube | |
| Liu et al. | A directional anemometer based on MEMS differential pressure sensors | |
| CN210834953U (en) | Pitot tube sensor for variable air volume valve | |
| Wu et al. | A robust calibration method for seven-hole pressure probes | |
| CN202886399U (en) | Hot-bulb anemometer | |
| CN214502553U (en) | Orifice flowmeter | |
| Marick et al. | A modified technique of flow transducer using Bourdon tube as primary sensing element | |
| CN113091838A (en) | Orifice flowmeter | |
| CN207180777U (en) | A kind of grid type static pressure difference wind and smoke flow measurement device applied to blower fan and include its blower fan | |
| CN203069312U (en) | Optical-fiber grating wind-pressure sensor | |
| Ardekani et al. | Study of degradation of dry cooling tower performance under wind conditions and method for tower efficiency enhancement (research note) | |
| CN208026664U (en) | A kind of finned tube testing device for heat transferring performance based on Real-Time Atmospheric humidity and pressure | |
| CN111174839A (en) | Air quantity measuring device | |
| CN113125799B (en) | Intelligent anemograph based on pitot tube | |
| CN111537135B (en) | Dynamic pressure field test method based on wall heat exchange characteristics | |
| CN205139163U (en) | Measure device of wind speed and wind direction | |
| CN113607377B (en) | Method for measuring subsonic pipe flow upstream and downstream noise sources by one-dimensional hot wire probe | |
| CN204730893U (en) | A kind of integrated iteration flowmeter | |
| CN204085580U (en) | A kind of adjusting type symmetric(al) flow gauge | |
| CN2399729Y (en) | Anti-sand wind speed profile pitot tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |