CN210834958U - Calibrating device of pitot tube - Google Patents
Calibrating device of pitot tube Download PDFInfo
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- CN210834958U CN210834958U CN201922132602.3U CN201922132602U CN210834958U CN 210834958 U CN210834958 U CN 210834958U CN 201922132602 U CN201922132602 U CN 201922132602U CN 210834958 U CN210834958 U CN 210834958U
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Abstract
The utility model discloses a calibrating installation of pitot tube belongs to measurement and detection technical field. The device comprises a gas collection section, a honeycomb section, a stabilizing section, a contraction section, a test section, a diffusion section and a power section which are sequentially communicated along the airflow direction, wherein a honeycomb device and a plurality of layers of damping nets are arranged in the stabilizing section, a working area of the test section is made of transparent acrylic plastic materials, a model can be clearly observed, appropriate template connection points are arranged on the side wall and the top of the working section, and a fan device is arranged in the power section. The utility model is not only compact in structure, area is little, easy operation, but also can provide even wind speed for the researcher.
Description
Technical Field
The utility model relates to a measurement and detection technical field relates to a calibrating installation of pitot tube, and the main use of this invention is that wind speed measurement instrument marks can satisfy measurement, meteorology, ocean, colliery, the legal measure utensil of departments such as industry examination wind speed instrument.
Background
Pitot tubes, also known as "pitot tubes" and "anemometers," are a tubular device that measures the total pressure and static pressure of an airflow to determine the velocity of the airflow, and are invented by h. Strictly speaking, a pitot tube only measures total pressure of air, also called total pressure tube, and measures total pressure and static pressure simultaneously is called a wind speed tube, but the wind speed tube is often called a pitot tube in a conventional way.
At present, pitot tube calibrating devices on the market have the problems of complex structure, high manufacturing cost, complex operation, large occupied area and the like. The calibrating device for the pitot tube is inconvenient to mount and dismount of the measuring tube head, poor in sealing effect and capable of influencing measuring results, and therefore the calibrating device for the pitot tube is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's defect, provide a calibrating installation of pitot tube, this calibrating installation is favorable to improving test section air current quality, and the homogeneity of control wind speed, mainly used wind speed measurement instrument are markd, satisfy measurement, meteorological phenomena, the ocean, the colliery, departments such as industry examine and determine the wind speed. The device has the characteristics of small occupied area, compact structure, simplicity in operation, high safety level and good visibility. The inlet contraction section of the utility model is provided with a compression ratio of 6:1 of the honeycomb rectifier, which can ensure that the air flow can smoothly enter the working section and is beneficial to improving the air flow quality of the test section. The test section working area is made of transparent acrylic plastic materials, the model can be observed clearly, appropriate template connection points are arranged on the side wall and the top of the working section, the tube head can be conveniently mounted and dismounted, the sealing effect is better, and the measuring result cannot be influenced.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a calibrating installation of pitot tube, includes along the gas collection section, stable section, shrink section, test section, diffuser segment, the power section that the air current direction is linked together in proper order, the bottom of equipment is base and universal wheel. And a honeycomb device and a damping net are arranged in the stabilizing section.
The utility model provides a calibrating installation of pitot tube, includes along gas collection section, stable section, shrink section, test section, diffuser segment and the power section that the air current direction is linked together in proper order, the bottom of equipment is base and universal wheel. Be equipped with honeycomb ware and a plurality of layers of damping net in the stable section, the shrink section includes entrance and export section, the test section comprises transparent acrylic acid plastic material, the diffuser section includes inlet end and outlet end, be equipped with fan device in the power section, fan device includes supporting mechanism, and along fairing anterior segment, fan, motor, fairing middle section and the fairing back end that the air current direction set gradually, fairing anterior segment and fairing back end pass through supporting mechanism fixes in the power section, and the calibrating installation of pitot tube adopts the full-automatic closed-loop control wind-tunnel air current of computer, and wind speed homogeneity is good, high accuracy variable frequency control wind speed.
The gas collection section comprises an air inlet end and an air outlet end, the air outlet end is connected with the stabilization section, and the cross section area of the air inlet end of the gas collection section to the air outlet end is gradually reduced.
And a honeycomb device and a plurality of layers of damping nets are sequentially arranged in the stabilizing section along the airflow direction.
The contraction section comprises an inlet section and an outlet section, the inlet end is connected with the stabilization section, and the cross-sectional area of the inlet end of the contraction section is sequentially reduced towards the cross-sectional area of the outlet end of the contraction section.
The test section working area is made of transparent acrylic plastic materials, and the side wall and the top of the working section are provided with proper template connecting points.
The diffusion section comprises an air inlet end and an air outlet end, the air inlet end is connected with the test section, and the air outlet section is connected with the power section.
The power section comprises a power front section and a power rear section, the fairing front section and the fairing middle section are arranged in the power front section, and the fairing rear section is arranged in the power rear section.
The fan comprises a propeller hub, a plurality of fan blades and a driving motor, wherein the fan blades are arranged on the propeller hub, and the driving motor is connected with the propeller hub.
The supporting mechanism comprises a front supporting sheet and a rear supporting sheet, the front section of the fairing is fixed in the power section through the front supporting sheet, and the rear section of the fairing is fixed in the power section through the rear supporting sheet.
The base of equipment bottom supports whole hole body structure, the below of base is equipped with the universal wheel, can remove. Preferably, a honeycomb device and a plurality of layers of damping nets are sequentially arranged in the stabilizing section along the airflow direction.
Preferably, the contraction section comprises an inlet end and an outlet end, the inlet end is connected with the stabilization section, and the cross-sectional area of the inlet end of the contraction section decreases towards the outlet end in sequence.
The utility model has the advantages that:
(1) through the compression ratio of 6:1 of the honeycomb rectifier at the inlet contraction section, the air flow quality at the test section is improved, the air speed uniformity of the device is improved, the turbulence degree is reduced, the air flow deflection angle is reduced, and the noise of the device is reduced.
(2) The device adopts open cycle suction type structure, provides even wind speed and stable test index, effectively improves experimental study's readiness. The wind tunnel adopts an open type circulating suction structure, and has compact structure and small occupied area.
(3) The device has the transparent working section with excellent visibility, and is convenient for a researcher to observe the process of a test. The device has high safety level, and the control equipment and the measuring instrument are arranged on an independent workbench. And the whole device can also move, so that the use convenience is improved.
Drawings
Fig. 1 is a schematic front view of the present invention;
reference numerals: 1. gas collection section, 2, stable section, 21, honeycomb ware, 22, damping net, 3, shrink section, 4, test section, 5, diffusion section, 6, power section, 7, base, 8, universal wheel.
Detailed Description
The technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention.
As shown in fig. 1, the utility model discloses a calibrating installation of pitot tube, including gas collection section 1, stable section 2, shrink section 3, test section 4, diffuser segment 5, the power section 6 that are linked together in proper order along the air current direction, the equipment below is equipped with base 7 and universal wheel 8.
The utility model provides a calibrating installation of pitot tube, includes along gas collection section, stable section, shrink section, test section, diffuser segment and the power section that the air current direction is linked together in proper order, the bottom of equipment is base and universal wheel. Be equipped with honeycomb ware and a plurality of layers of damping net in the stable section, the shrink section includes entrance and export section, the test section comprises transparent acrylic acid plastic material, the diffuser section includes inlet end and outlet end, be equipped with fan device in the power section, fan device includes supporting mechanism, and along fairing anterior segment, fan, motor, fairing middle section and the fairing back end that the air current direction set gradually, fairing anterior segment and fairing back end pass through supporting mechanism fixes in the power section, and the calibrating installation of pitot tube adopts the full-automatic closed-loop control wind-tunnel air current of computer, and wind speed homogeneity is good, high accuracy variable frequency control wind speed.
The gas collection section comprises an air inlet end and an air outlet end, the air outlet end is connected with the stabilization section, and the cross section area of the air inlet end of the gas collection section to the air outlet end is gradually reduced.
And a honeycomb device and a plurality of layers of damping nets are sequentially arranged in the stabilizing section along the airflow direction.
The contraction section comprises an inlet section and an outlet section, the inlet end is connected with the stabilization section, and the cross-sectional area of the inlet end of the contraction section is sequentially reduced towards the cross-sectional area of the outlet end of the contraction section.
The test section working area is made of transparent acrylic plastic materials, and the side wall and the top of the working section are provided with proper template connecting points.
The diffusion section comprises an air inlet end and an air outlet end, the air inlet end is connected with the test section, and the air outlet section is connected with the power section.
The power section comprises a power front section and a power rear section, the fairing front section and the fairing middle section are arranged in the power front section, and the fairing rear section is arranged in the power rear section.
The fan comprises a propeller hub, a plurality of fan blades and a driving motor, wherein the fan blades are arranged on the propeller hub, and the driving motor is connected with the propeller hub.
The supporting mechanism comprises a front supporting sheet and a rear supporting sheet, the front section of the fairing is fixed in the power section through the front supporting sheet, and the rear section of the fairing is fixed in the power section through the rear supporting sheet.
The base of equipment bottom supports whole hole body structure, the below of base is equipped with the universal wheel, can remove.
The specific working principle is as follows: the gas collection section 1 is in a horn shape as a whole, and is used for enlarging the contact surface of air and better enabling airflow to enter the wind tunnel system. The stabilizing section 2 is a section of equal diameter pipe, and the downstream is connected with the contraction section 3. The flow stabilizing section 2 is internally provided with rectifying equipment such as a honeycomb device 21 and a plurality of layers of damping nets 22, and the airflow is gradually stabilized after passing through the honeycomb device 21 and the damping nets 22 and attenuates the residual small vortexes, so that the airflow is kept uniform and stable. The contraction section 3 is a contraction pipeline, so that the air flow is accelerated uniformly, and when the air flow flows along the contraction section 3, the separation does not occur on the hole wall. The air flow at the outlet of the contraction section 3 is required to be uniform, straight and stable, so that the contraction section 3 is not suitable for overlong, and the length of the contraction section is suitable, so that the cost of wind tunnel construction can be reduced, and the energy loss can be reduced. The working area of the test section 4 is made of transparent acrylic plastic material, the model can be observed clearly, and the side wall and the top of the working section are provided with proper template connecting points. The diffuser section 5 is a diffuser duct that allows the gas flow to be uniformly diffused. The power section 6 is arranged at the tail part of the machine, a fan is arranged in the power section, is a power source of the wind tunnel and continuously supplements energy for the airflow in the wind tunnel so as to ensure that the airflow constantly flows in the wind tunnel at a certain speed. The base 7 is used to support the entire instrument. The appearance of the wheel of universal wheel 8 is cylindrical, is provided with the centre bore, and the length of wheel is greater than the diameter, and the base operation of being convenient for is more stable.
As shown in fig. 1, a honeycomber 21 and a plurality of layers of damping nets 22 are sequentially arranged in the stabilizing section 2 along the airflow direction, wherein the honeycomber 21 is used for guiding and dividing airflow large vortexes, which is beneficial to accelerating the attenuation of the vortexes. The cross-sectional shape of the honeycomb lattice of the honeycomb unit 21 may be selected from one of a circular shape, a rectangular shape, and a hexagonal shape, but other shapes may be selected. In specific implementation, the cross-sectional shape of the honeycomb lattice is preferably a regular hexagon.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. The calibrating device for the pitot tube is characterized by comprising a gas collection section, a stable section, a contraction section, a test section, a diffusion section and a power section which are sequentially communicated along the airflow direction, wherein the bottom of the device is provided with a base and universal wheels, a honeycomb device and a plurality of layers of damping nets are arranged in the stable section, the contraction section comprises an inlet section and an outlet section, the test section is made of transparent acrylic plastic materials, the diffusion section comprises an air inlet end and an air outlet end, a fan device is arranged in the power section, the fan device comprises a supporting mechanism, a fairing front section, a fan, a motor, a fairing middle section and a fairing rear section which are sequentially arranged along the airflow direction, the fairing front section and the fairing rear section are fixed in the power section through the supporting mechanism, and the calibrating device for the pitot tube adopts a computer to fully-automatically control the airflow in a closed loop manner, the wind speed uniformity is good, and the wind speed is controlled in a high-precision frequency conversion mode.
2. The calibrating apparatus for a pitot tube according to claim 1, wherein the gas collecting section comprises an air inlet end and an air outlet end, the air outlet end is connected with the stabilizing section, and the cross-sectional area of the air inlet end of the gas collecting section to the air outlet end is gradually reduced.
3. The calibrating apparatus for the pitot tube as claimed in claim 1, wherein a honeycomb device and a plurality of layers of damping nets are arranged in the stabilizing section in sequence along the airflow direction.
4. The calibrating apparatus for a pitot tube of claim 1, wherein the contracting section comprises an inlet section and an outlet section, the inlet end is connected with the stabilizing section, and the cross-sectional area of the contracting section decreases from the inlet end to the outlet end.
5. The apparatus for calibrating a pitot tube of claim 1, wherein the working area of the test section is made of transparent acrylic plastic material, and the side wall and the top of the working section are provided with suitable template connection points.
6. The pitot tube calibration device of claim 1, wherein the diffuser section comprises an air inlet end and an air outlet end, the air inlet end is connected to the test section, and the air outlet section is connected to the power section.
7. The calibrating apparatus for a pitot tube of claim 1, wherein the power section comprises a power front section and a power rear section, the fairing front section and the fairing middle section are arranged in the power front section, and the fairing rear section is arranged in the power rear section.
8. The calibrating apparatus for the pitot tube of claim 1, wherein the fan comprises a hub, a plurality of fan blades, and a driving motor, the fan blades are arranged on the hub, and the driving motor is connected with the hub.
9. The calibrating apparatus for a pitot tube as claimed in claim 1, wherein the supporting mechanism comprises a front supporting plate and a rear supporting plate, the front segment of the fairing is fixed in the power segment through the front supporting plate, and the rear segment of the fairing is fixed in the power segment through the rear supporting plate.
10. The calibrating apparatus for a pitot tube as claimed in claim 1, wherein the base at the bottom of the apparatus supports the whole hole structure, and universal wheels are arranged below the base and can move.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922132602.3U CN210834958U (en) | 2019-12-03 | 2019-12-03 | Calibrating device of pitot tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922132602.3U CN210834958U (en) | 2019-12-03 | 2019-12-03 | Calibrating device of pitot tube |
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| Publication Number | Publication Date |
|---|---|
| CN210834958U true CN210834958U (en) | 2020-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922132602.3U Active CN210834958U (en) | 2019-12-03 | 2019-12-03 | Calibrating device of pitot tube |
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| CN (1) | CN210834958U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109669056A (en) * | 2019-02-27 | 2019-04-23 | 西安鼎研科技股份有限公司 | A kind of calibrating installation and method of Pitot tube current meter |
| CN112924134A (en) * | 2021-01-25 | 2021-06-08 | 吉林大学 | Portable anti-wind stability test system |
| TWI762081B (en) * | 2020-12-15 | 2022-04-21 | 睿普工程股份有限公司 | Flow rate monitoring system, zero point correction method, full width correction method and flushing and correction method |
-
2019
- 2019-12-03 CN CN201922132602.3U patent/CN210834958U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109669056A (en) * | 2019-02-27 | 2019-04-23 | 西安鼎研科技股份有限公司 | A kind of calibrating installation and method of Pitot tube current meter |
| TWI762081B (en) * | 2020-12-15 | 2022-04-21 | 睿普工程股份有限公司 | Flow rate monitoring system, zero point correction method, full width correction method and flushing and correction method |
| CN112924134A (en) * | 2021-01-25 | 2021-06-08 | 吉林大学 | Portable anti-wind stability test system |
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