CN201203516Y

CN201203516Y - Non-wind direction wind speed probe for building wind environment wind-tunnel test

Info

Publication number: CN201203516Y
Application number: CNU2008200467983U
Authority: CN
Inventors: 李庆祥; 杨仕超; 黄啟明; 陈东红
Original assignee: GUANGDONG PROV INST OF BUILDING SCIENCE
Current assignee: Guangdong Provincial Academy of Building Research Group Co Ltd
Priority date: 2008-04-23
Filing date: 2008-04-23
Publication date: 2009-03-04
Anticipated expiration: 2018-04-23

Abstract

The utility model discloses a non-wind direction wind speed probe for building wind environment wind-tunnel test composed of a casing, an end cap, a long pressure sampling pipe and a short pressure sampling pipe, the casing is of cylinder-shaped structure, one end of which is an opening end, the other end of which is closing end, the end cap is tightly mounted in the closing end of the casing, the long pressure sampling pipe passes out from the closing end after passing through the opening end of the casing and the end cap, the pipe wall of the long pressure sampling pipe is contacted and sealed closely with the end cap, the short pressure sampling pipe extends from the closing end and is communicated with the casing cavity passing through the end cap, the pipe wall of the short pressure sampling pipe is contacted and sealed closely with the end cap. The utility model can test wind speed of height position of the building surroundings pedestrian using the relationship between air pressure difference and wind field speed of construction model surroundings in wind tunnel, the probe is arranged flexibly, and number of the probe is not limited, the probe is connected with a pressure scanning device and can perform wind environment wind tunnel test of sports ground, tall building, city architectural complex, residential district and so on buildings.

Description

A kind ofly be used to build the calm of wind environment wind tunnel test and pop one's head in to wind speed

Technical field

The utility model relates to a kind of the calm to the wind speed probe of wind environment wind tunnel test that be used to build, and relates in particular to a kind of utilization test leeway as principle, and the pedestrian highly locates calm test probe to wind speed around the test architecture in wind-tunnel.

Background technology

The pedestrian highly locates wind speed than being one of main contents of building ambient wind environmental wind tunnel test.Highly locate wind speed than when test carrying out the pedestrian, need the dynamic pressure that obtains between measured point and the ground subpoint poor; This pressure differential produces owing to measuring point and ground subpoint wind speed difference, and it is poor to obtain wind speed in conjunction with bernoulli equation; Because face of land wind speed is zero in the wind-tunnel, obtains the true wind velocity that the pedestrian highly locates measuring point thus; By at the some measuring points of buildings periphery to be measured, just can obtain to build ambient wind environment key factor-wind field wind speed profile value, be used to estimate the quality of wind environment.Because measuring wind mainly adopts hot line, hotting mask wind speed tester in the wind tunnel test at present, test wind speed by measuring the thermal change amount, this surveying instrument uses a kind of special metal wire, to its heating, the different wind speed different heat that can dissipate obtains wind speed according to this principle.A little less than metal hot line wherein is highly brittle, be easily damaged, very high to the requirement of test environment, and the dynamic responding speed of instrument is very slow.The cost of a whole set of measuring equipment is higher, and is not easy to arrange a large amount of measuring points, is difficult in the wind speed at test certain height place in the wind-tunnel of having arranged groups of building, and is difficult to accomplish the multiple spot synchro measure.

Summary of the invention

The purpose of this utility model provides that a kind of suitable wind environment wind speed test, cost cost are low, convenient test differential calm to dynamic wind speed test probe.

Above-mentioned purpose of the present utility model realizes by following technical solution: a kind ofly be used to build the calm of wind environment wind tunnel test and pop one's head in to wind speed, it is characterized in that: described probe is by housing, plug, long pressure pipe and short pressure pipe are formed, described housing is columnar structured, the one end is for opening wide end, the other end is a blind end, the airtight blind end that is installed in housing of described plug, described long pressure pipe pass housing open wide end and plug after pass from the blind end of housing, its tube wall closely contacts and seals with plug, described pressure short tube is stretched into by the blind end of housing, pass plug and be communicated with the housing inner chamber, its tube wall closely contacts and seals with plug.

In the technique scheme, the internal diameter of described housing is 6～9mm, and the internal diameter of described long pressure pipe and short pressure pipe is 1～3mm; The diameter of described plug is consistent with the internal diameter of housing, and thickness is 1～2mm; The wall thickness of described housing, long pressure pipe and short pressure pipe is 0.5～1mm.

The utility model probe utilizes the pressure differential between long pressure pipe and the housing to obtain the calm to wind speed of certain height place in the wind-tunnel, certain height is decided according to the vertical length of opening wide end that long pressure pipe stretches out housing, regulate vertical length, reduced scale in conjunction with model in wind tunnel, thereby the control test height obtains pedestrian's height wind speed field.

The utility model utilizes the wind speed that the pedestrian highly locates around the relation test building between the BUILDINGS MODELS ambient wind field speed degree in leeway and the wind-tunnel, the probe flexible arrangement, and there is not restricted number, link to each other with pressure scanning equipment, can make things convenient for, carry out flexibly the wind environment wind tunnel test, conveniently carry out the wind environment wind tunnel test of buildingss such as stadiums, skyscraper, architecture ensemble, residential district.

Compared with prior art, the utlity model has following remarkable advantage:

(1) owing to need not to test wind direction, probe construction is simple, and the reliability height is easy to make;

(2) adopt the pressure reduction principle, only need the test absolute pressure, conveniently unite use with wind-tunnel manometric test pressure acquisition equipment;

(3) because volume is little, easy to use, can incalculability in the wind environment test, the arranging of restriction, and can the synchronous acquisition dynamic pressure, obtain synchronous wind speed profile.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is an one-piece construction synoptic diagram of the present utility model;

Fig. 2 is A-A sectional view of Fig. 1;

Fig. 3 is B-B sectional view of Fig. 1.

Embodiment

As shown in Figure 1 to Figure 3 a kind of is used to build the calm of wind environment wind tunnel test and pops one's head in to wind speed, by housing 2, plug 3, long pressure pipe 1 and short pressure pipe 4 are formed, housing 2 is columnar structured, the one end is for opening wide end 2a, the other end is blind end 2b, the described plug 3 airtight blind end 2b that are installed in housing 2, long pressure pipe 1 passes opening wide of housing 2 and holds 2a and plug 3 back blind end 2b from housing to pass, its tube wall closely contacts and seals with plug 3, pressure short tube 4 is stretched into by the blind end 2b of housing 2, pass plug 3 and be communicated with the housing inner chamber, its tube wall closely contacts and seals with plug 3.

The utility model probe utilizes the pressure differential between long pressure pipe 1 and the housing 2 to obtain the calm to wind speed of certain height place in the wind-tunnel, certain height is decided according to the vertical length of opening wide end 2a that long pressure pipe 1 stretches out housing 2, regulate vertical length, reduced scale in conjunction with model in wind tunnel, thereby the control test height obtains pedestrian's height wind speed field.

In the utility model, the internal diameter of housing all can in the scope of 6～9mm; The internal diameter of long pressure pipe and short pressure pipe all can in the scope of 1～3mm; The thickness of plug can be in 1～2mm scope value; And the wall thickness of housing, long pressure pipe and short pressure pipe all can be in 0.5～1mm scope value.

The utility model in use is arranged in probe around the BUILDINGS MODELS to be measured in the wind-tunnel, and links to each other with the pressure scanning valve; The scanning valve links to each other with computer with pressure acquisition equipment and carries out automatic data collection; Open wind tunnel fan, the dynamic wind pressure data of automatic acquisition probe layout place measuring point is by the air speed value at data processing acquisition certain height place, measuring point place; By drawing the air speed value of some measuring points, can understand buildings wind environment to be measured.

Claims

1. one kind is used to build the calm of wind environment wind tunnel test and pops one's head in to wind speed, it is characterized in that: described probe is by housing (2), plug (3), long pressure pipe (1) and short pressure pipe (4) are formed, described housing (2) is columnar structured, the one end is for opening wide end (2a), the other end is blind end (2b), the airtight blind end (2b) that is installed in housing (2) of described plug (3), end (2a) and plug (3) back that opens wide that described long pressure pipe (1) passes housing (2) passes from the blind end (2b) of housing, its tube wall closely contacts and seals with plug (3), described pressure short tube (4) is stretched into by the blind end (2b) of housing (2), pass plug (3) and be communicated with the housing inner chamber, its tube wall closely contacts and seals with plug (3).

2. according to claim 1ly a kind ofly be used to build wind environment wind tunnel test calm it is characterized in that: the internal diameter of described housing (2) is 6～9mm to the wind speed probe, the internal diameter of described long pressure pipe (1) and pressure short tube (4) is 1～3mm.

3. according to claim 1ly a kind ofly be used to build wind environment wind tunnel test calm it is characterized in that: the diameter of described plug (3) is consistent with the internal diameter of housing (2) to the wind speed probe, thickness is 1～2mm.

4. a kind of being used to according to claim 1 built the calm to the wind speed probe of wind environment wind tunnel test, and it is characterized in that: the wall thickness of described housing (2), long pressure pipe (1) and pressure short tube (4) is 0.5～1mm.