CN103063399A - Framed bent device for wind tunnel flow field - Google Patents

Framed bent device for wind tunnel flow field Download PDF

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Publication number
CN103063399A
CN103063399A CN2013100075588A CN201310007558A CN103063399A CN 103063399 A CN103063399 A CN 103063399A CN 2013100075588 A CN2013100075588 A CN 2013100075588A CN 201310007558 A CN201310007558 A CN 201310007558A CN 103063399 A CN103063399 A CN 103063399A
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CN
China
Prior art keywords
wind tunnel
flow
circular steel
steel pipe
screw
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.)
Pending
Application number
CN2013100075588A
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Chinese (zh)
Inventor
余世策
冀晓华
屠荣伟
胡志华
林竣
蒋建群
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Zhejiang University ZJU
Original Assignee
Zhejiang University ZJU
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhejiang University ZJU filed Critical Zhejiang University ZJU
Priority to CN2013100075588A priority Critical patent/CN103063399A/en
Publication of CN103063399A publication Critical patent/CN103063399A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a framed bent device for wind tunnel flow field. A piece of circular steel plate is welded on one end of circular steel tube. The other end of the circular steel tube is welded with nuts. Screws are inserted into the circular steel tubes through the nuts. The screws and the nuts form screw pairs. The screw heads are welded with another piece of circular steel plate. More than two wind tunnel flow field testing component identical in structure are arranged in the circular steel tubes in two circular steel plates and form the frame bent device. Two semi-circle ring type steel hoops of each identical structure wind tunnel flow field testing component hoop tightly on the circular steel tubes. Pitot tubes are arranged on a piece of semi-circle ring type steel hoop through a connecting element. A total pressure hole and a static pressure hole of one ends of the pitot tubes are respectively connected with a pressure measuring device through a leather tube. The other ends of the pitot tubes are a probe. The framed bent device for wind tunnel flow field can be horizontally or vertically arranged on designated position of the wind tunnel testing section according to debugging demand of the wind tunnel flow field and installation of each pitot tube is adjusted according to requirements. The framed bent device for wind tunnel flow field can greatly improve accuracy and efficiency of flow field testing.

Description

The bent device of Flow Field in Wind Tunnel test
Technical field
The present invention relates to the test unit of Structural Wind Engineering technical field, especially relate to a kind of bent device of Flow Field in Wind Tunnel test.
Background technology
The Flow Field in Wind Tunnel debugging is the prerequisite of carrying out the research of building structure wind resistance, and the wind speed profile of differing heights directly affects the accuracy of wind tunnel test in the test chamber.Pitot tube is the most common sensor of test mean wind speed, adopt pressure instrumentataion test pitot tube stagnation pressure and static pressure can obtain mean wind speed, wind speed profile along height in the wind-tunnel then needs to adopt many pitot tubes to carry out synchronism detection, therefore be necessary to develop the device be used to many pitot tubes are installed, should guarantee the fastness that pitot tube is installed, can regulate according to testing requirements again.Regrettably the most domestic wind-tunnel does not all have a cover can be used for installing more neatly the device of many pitot tubes at present, artificial changed test height in flow field debugging, obtaining not is the wind speed profile of synchronism detection, has a strong impact on precision and the efficient of flow field debugging.
Summary of the invention
The object of the present invention is to provide a kind of bent device of Flow Field in Wind Tunnel test, can be used for many pitot tubes are installed, thereby lay the foundation for carrying out the flow field synchronism detection.
The technical solution adopted for the present invention to solve the technical problems is:
The present invention is at circular steel plate of round steel pipe one end vertical welding, other end coaxial welding nut, and screw inserts in the round steel pipe by nut, and screw consists of screw pair with nut, another piece circle steel plate of screw head vertical welding; Round steel pipe in two circular steel plates is installed two identical Flow Field in Wind Tunnel test components of above structure and is consisted of bent device; The Flow Field in Wind Tunnel test component that each structure is identical includes: two semicircles annular stirrup, pitot tube; Two semicircle annular stirrups pass through the screw banding at two ends at annular stirrup of round steel pipe formation, pitot tube vertical circular steel pipe is installed on the semicircle annular stirrup by web member, the pitot hole of pitot tube one end links to each other with pressure instrumentataion by leather hose respectively with baroport, and the pitot tube other end is probe.
Described Flow Field in Wind Tunnel test component quantity arranges according to the experiment situation, and the distance between the Flow Field in Wind Tunnel test component equidistantly or not equidistantly is arranged on the round steel pipe according to the experiment situation.
The probe of described all pitot tubes is towards all identical, and all center probes are identical to the centre distance of round steel pipe.
Have four circular holes on the described circular steel plate that is not welded with screw, be welded with ribbed stiffener between a described circular steel plate and round steel pipe.
The invention has the beneficial effects as follows:
The present invention can be according to the requirement of Flow Field in Wind Tunnel debugging, and vertical or level is installed on the assigned address of test chamber, and the installation site of each pitot tube can be regulated according to test request, and this device can improve precision and the efficient of flow-field test greatly.
Description of drawings
Fig. 1 is front view of the present invention.
Fig. 2 is A-A sectional view of the present invention.
Fig. 3 is B-B sectional view of the present invention.
Fig. 4 is C-C sectional view of the present invention.
Fig. 5 is embodiments of the invention figure.
Among the figure: 1, round steel pipe, 2, ribbed stiffener, 3, circular steel plate, 4, nut, 5, screw, 6, circular steel plate, 7, two semicircles annular stirrups, 8, screw, 9, the annular stirrup, 10, pitot tube, 11, pitot hole, 12, baroport, 13, leather hose, 14, probe, 15, circular hole, 16, test section base plate, 17, the test section top board.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Such as Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, the present invention is at circular steel plate 3 of round steel pipe 1 one end vertical weldings, and other end coaxial welding nut 4, screw 5 pass through nut 4 and insert in the round steel pipe 1, screw 5 consists of screw pair with nut 4, the circular steel plate 6 of another piece of screw 5 head vertical weldings; Round steel pipe 1 in two circular steel plates is installed two identical Flow Field in Wind Tunnel test components of above structure and is consisted of bent device; The Flow Field in Wind Tunnel test component that each structure is identical includes: two semicircles annular stirrup 7, pitot tube 10; Two semicircle annular stirrups 7 pass through screw 8 bandings at two ends at annular stirrup 9 of round steel pipe 1 formation, pitot tube 10 vertical circular steel pipes 1 are installed on the semicircle annular stirrup 7 by web member, the pitot hole 11 of pitot tube 10 1 ends links to each other with pressure instrumentataion by leather hose 13 respectively with baroport 12, and pitot tube 10 other ends are probe 14.
Described Flow Field in Wind Tunnel test component quantity arranges according to the experiment situation, and the distance between the Flow Field in Wind Tunnel test component equidistantly or not equidistantly is arranged on the round steel pipe 1 according to the experiment situation.
As shown in Figure 2, the probe 14 of described all pitot tubes 10 is towards all identical, and all 14 centers of popping one's head in are identical to the centre distance of round steel pipe 1.
Such as Fig. 1, shown in Figure 4, have four circular holes 15 on the described circular steel plate 3 that is not welded with screw 5, a described circular steel plate 3 and 1 of round steel pipe are welded with ribbed stiffener 2.
Embodiment:
Now take the test of ten measuring points in the vertical flow field of wind-tunnel as example illustrates using method of the present invention.
As shown in Figure 5, at first will install circular steel plate 3 and stand on the test chamber assigned address down, adopt screw that circular steel plate 3 is fixed on the test section base plate 16, with spanner turn screw 5 heads, the circular steel plate 6 of another piece is held out against test section top board 17, in round steel pipe 10 Flow Field in Wind Tunnel test components that structure is identical are installed, and guarantee that the distance between each Flow Field in Wind Tunnel test component satisfies the requirement of flow-field test, and the probe 14 that guarantees all pitot tubes 10 is all towards the flow path direction that comes of wind, and 14 centers of popping one's head in are identical to the distance at round steel pipe 1 center, the pitot hole 11 of each pitot tube 10 is linked to each other with pressure instrumentataion by leather hose 13 respectively with baroport 12, open blasting, by the stagnation pressure of each pitot tube 13 of recording and the mean wind speed that static pressure calculates 14 positions of respectively popping one's head in.
Above-mentioned embodiment is used for illustrating the present invention, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modifications and changes to the present invention makes all fall into protection scope of the present invention.

Claims (4)

1. the bent device of Flow Field in Wind Tunnel test, it is characterized in that: at a round steel pipe circular steel plate of (1) one end vertical welding (3), other end coaxial welding nut (4), screw (5) inserts in the round steel pipe (1) by nut (4), screw (5) consists of screw pair with nut (4), the circular steel plate (6) of another piece of screw (5) head vertical welding; Round steel pipe (1) in two circular steel plates is installed two identical Flow Field in Wind Tunnel test components of above structure and is consisted of bent device; The Flow Field in Wind Tunnel test component that each structure is identical includes: two semicircles annular stirrup (7), pitot tube (10); Two semicircle annular stirrups (7) form an annular stirrup (9) by screw (8) banding at two ends in round steel pipe (1), pitot tube (10) vertical circular steel pipe (1) is installed on the semicircle annular stirrup (7) by web member, the pitot hole (11) of pitot tube (10) one ends links to each other with pressure instrumentataion by leather hose (13) respectively with baroport (12), and pitot tube (10) other end is probe (14).
2. the bent device of a kind of Flow Field in Wind Tunnel test according to claim 1, it is characterized in that: described Flow Field in Wind Tunnel test component quantity arranges according to the experiment situation, and the distance between the Flow Field in Wind Tunnel test component equidistantly or not equidistantly is arranged on the round steel pipe (1) according to the experiment situation.
3. the bent device of a kind of Flow Field in Wind Tunnel test according to claim 1, it is characterized in that: the probe (14) of described all pitot tubes (10) is towards all identical, and all probes (14) center is identical to the centre distance of round steel pipe (1).
4. the bent device of a kind of Flow Field in Wind Tunnel test according to claim 1, it is characterized in that: have four circular holes (15) on the described circular steel plate (3) that is not welded with screw (5), be welded with ribbed stiffener (2) between a described circular steel plate (3) and round steel pipe (1).
CN2013100075588A 2013-01-09 2013-01-09 Framed bent device for wind tunnel flow field Pending CN103063399A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013100075588A CN103063399A (en) 2013-01-09 2013-01-09 Framed bent device for wind tunnel flow field

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013100075588A CN103063399A (en) 2013-01-09 2013-01-09 Framed bent device for wind tunnel flow field

Publications (1)

Publication Number Publication Date
CN103063399A true CN103063399A (en) 2013-04-24

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Country Link
CN (1) CN103063399A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104458195A (en) * 2014-10-17 2015-03-25 北京航天益森风洞工程技术有限公司 Temperature and pressure measurement framed bent installing device
CN107036780A (en) * 2017-04-28 2017-08-11 甘肃省治沙研究所 A kind of blowing sand wind tunnel may move semi-automatic multifunction frame of axes
CN108195556A (en) * 2018-02-05 2018-06-22 浙江大学 Wind tunnel test auxiliary device and its application method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030061108A (en) * 2002-01-10 2003-07-18 주식회사 서진인스텍 Triple pitot assembly for flow measurement
CN2562169Y (en) * 2002-08-22 2003-07-23 武汉钢铁(集团)公司 Multi-point bound pitot tube measuring device
CN201954152U (en) * 2010-12-27 2011-08-31 江西洪都航空工业集团有限责任公司 Airspeed tube rapid mounting fixture in pressure-height simulator pipeline
CN203024954U (en) * 2013-01-09 2013-06-26 浙江大学 Frame bent device for flow field test of wind tunnel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030061108A (en) * 2002-01-10 2003-07-18 주식회사 서진인스텍 Triple pitot assembly for flow measurement
CN2562169Y (en) * 2002-08-22 2003-07-23 武汉钢铁(集团)公司 Multi-point bound pitot tube measuring device
CN201954152U (en) * 2010-12-27 2011-08-31 江西洪都航空工业集团有限责任公司 Airspeed tube rapid mounting fixture in pressure-height simulator pipeline
CN203024954U (en) * 2013-01-09 2013-06-26 浙江大学 Frame bent device for flow field test of wind tunnel

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
余世策 等: "测压管路动态特性实测技术研究", 《实验技术与管理》 *
余世策 等: "边界层风洞多功能流场模拟装置的研制", 《实验室研究与探索》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104458195A (en) * 2014-10-17 2015-03-25 北京航天益森风洞工程技术有限公司 Temperature and pressure measurement framed bent installing device
CN104458195B (en) * 2014-10-17 2017-06-27 北京航天益森风洞工程技术有限公司 Thermometric pressure measurement truss erection device
CN107036780A (en) * 2017-04-28 2017-08-11 甘肃省治沙研究所 A kind of blowing sand wind tunnel may move semi-automatic multifunction frame of axes
CN108195556A (en) * 2018-02-05 2018-06-22 浙江大学 Wind tunnel test auxiliary device and its application method

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Application publication date: 20130424