CN208537061U - A wind speed, pressure and temperature calibration system based on jet wind tunnel - Google Patents
A wind speed, pressure and temperature calibration system based on jet wind tunnel Download PDFInfo
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- CN208537061U CN208537061U CN201821397667.XU CN201821397667U CN208537061U CN 208537061 U CN208537061 U CN 208537061U CN 201821397667 U CN201821397667 U CN 201821397667U CN 208537061 U CN208537061 U CN 208537061U
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Abstract
The utility model discloses a kind of wind speed based on jet stream wind-tunnel, pressure, temperature calibration system, the system comprises: controller, vacuum pump, refrigeration unit, evaporator, jet stream wind-tunnel, blower, seal cavity；The evaporator, the jet stream wind-tunnel and the blower are arranged inside the seal cavity；The outside of the seal cavity is arranged in the controller, the refrigeration unit and the vacuum pump；The blower is arranged in the jet stream wind-tunnel；The controller is used to change the intracorporal temperature of the seal chamber, wind speed and pressure by controlling the refrigeration unit, the jet stream wind-tunnel and the vacuum pump.Above system in the utility model can be realized the accurate simulation to wind speed, pressure and temperature to guarantee to demarcate all environment quasi-instruments.
Description
Technical field
The utility model relates to true environment simulation field, more particularly to a kind of wind speed based on jet stream wind-tunnel, pressure,
Temperature calibration system.
Background technique
The calibration of wind speed, pressure and temperature, indeed through the ring for simulating different wind speed, temperature and pressure
The calibration to the instrument of airspeedometer, particle sampler, gas apparatus and all environmental classes is realized in border.By changing environment
In wind speed, anticipated that the influence of cutting efficiency of the different particle samplers under different wind speed.Alternatively, by changing
The variation of temperature and pressure precognition gas apparatus under different pressures and different temperatures in changing environment.Currently, due to adopting
The non-intellectual of sample environment, it is existing that sampling instrument often will appear that data are not allowed, outrange, exceptional value, instrument operating parameter are abnormal etc.
As therefore, in order to improve sampling instrument sampling precision and avoid the waste of unnecessary manpower financial capacity, it is necessary to provide one kind
Wind speed, pressure, temperature calibration system.
Currently, in the prior art, typically by one seal cavity of setting, evaporator and wind are arranged in the cavity
Machine etc. realizes the simulation to wind speed.But its simulation precision is lower, cannot achieve the control to wind speed, and cannot achieve pressure
It is simulated while power, temperature, wind speed.
Summary of the invention
The purpose of the utility model is to provide a kind of wind speed based on jet stream wind-tunnel, pressure, temperature calibration system, realizations pair
The accurate simulation of wind speed, pressure and temperature is to guarantee to demarcate all environment quasi-instruments.
To achieve the above object, the utility model provides following scheme:
A kind of wind speed based on jet stream wind-tunnel, pressure, temperature calibration system, the system comprises:
Controller, vacuum pump, refrigeration unit, evaporator, jet stream wind-tunnel, blower, seal cavity；
The evaporator, the jet stream wind-tunnel and the blower are arranged inside the seal cavity；
The outside of the seal cavity is arranged in the controller, the refrigeration unit and the vacuum pump；
The blower is arranged in the jet stream wind-tunnel；
The controller is used for by controlling the refrigeration unit, the jet stream wind-tunnel and the vacuum pump to change
State the intracorporal temperature of seal chamber, wind speed and pressure.
Optionally, the seal cavity is also provided with door body, and the size of the door body is 1 × 1.5m.
Optionally, the seal cavity is made of insulation board, and the outer surface of the insulation board is coated with waterproof cement, described close
The size for sealing cavity is 2 × 2.8 × 2.2m.
Optionally, it is additionally provided with hanging plate at the top of the seal cavity, multiple holes are offered on the hanging plate, for hanging
Instrument to be calibrated.
Optionally, the evaporator specifically includes: the first evaporator, the second evaporator, third evaporator.
Optionally, the power of the blower is 15KW.
Optionally, the diameter of the efflux nozzle of the jet stream wind-tunnel is 300mm.
Optionally, the size of the evaporator is 2.7 × 0.55 × 0.6m, and the evaporator is located at the jet stream wind-tunnel
Efflux nozzle the other side.
According to specific embodiment provided by the utility model, the utility model discloses following technical effects:
By the way that jet stream wind-tunnel is arranged in sealed chamber in the utility model, blower is set in jet stream wind-tunnel, is being sealed
Vacuum pump and refrigeration unit is arranged in exterior thereto, controls unit, vacuum pump and rotation speed of fan by controller, can be realized
In the accurate simulation of the indoor temperature of seal chamber, pressure and wind speed, and then realizes and all appts of environmental classes are demarcated.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without any creative labor, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is wind speed, pressure, temperature calibration system construction drawing of the utility model embodiment based on jet stream wind-tunnel.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The purpose of the utility model is to provide a kind of wind speed based on jet stream wind-tunnel, pressure, temperature calibration system, realizations pair
The accurate simulation of wind speed, pressure and temperature is to guarantee to demarcate all environment quasi-instruments.
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing and have
Body embodiment is described in further detail the utility model.
Fig. 1 is wind speed, pressure, temperature calibration system construction drawing, such as Fig. 1 of the utility model embodiment based on jet stream wind-tunnel
It is shown, the system comprises:
Controller 1, vacuum pump 2, refrigeration unit 3, evaporator 4, jet stream wind-tunnel 5, blower 6, seal cavity 7；
The evaporator 4, the jet stream wind-tunnel 5 and the blower 6 are arranged inside the seal cavity；
The size of the evaporator 4 is 2.7 × 0.55 × 0.6m, since the volume of the evaporator 4 is larger, steam
The installation of hair device 4 is contemplated that the compatibility of air inlet and the outlet and the wind field in seal cavity 7, and there are air inlets for evaporator 4
Problem, therefore evaporator 4 is mounted remotely to the side of the efflux nozzle of jet stream wind-tunnel 4, the i.e. leftmost side in seal cavity 7.
Since refrigeration unit 3 and the vacuum pump 2 need good ventilation and heat, by 3 He of refrigeration unit
The vacuum pump 2 is mounted on outside the seal cavity 7, so as to good ventilation heat dissipation.
The controller 1 is also disposed at the outside of the seal cavity 7；
The blower 6 is arranged in the jet stream wind-tunnel, controls the revolving speed of the blower 6 by controller 1 to control wind
The size of speed, the model HL3-2A of the blower, power 15KW；
The controller 1 be also used to by control the refrigeration unit 3, the jet stream wind-tunnel 5 and the vacuum pump 2 come
Change temperature, wind speed and the pressure in the seal cavity 7, and the temperature in seal cavity 7 minimum reachable subzero 20 is taken the photograph
Family name's degree is to subzero 30 degrees Celsius.
Known highest wind velocity is 50m/s, and highest dynamic pressure is
Maximum stream flow Q=sectional area * speed * 3600=3.14* (0.15)2* 3600*50m/s=12717m3/h。
When selecting contraction section, to obtain flow field more evenly, shrinkage ratio should be greater than 4, select the maximum gauge of contraction section
For 800mm.(shrinkage ratio=air inlet open area/outlet open area=π (0.4)2/π(0.15)2=0.711) jet stream wind-tunnel is considered
It is to work in a limited space, sinuous flow easy to form, it is difficult to ensure that the uniformity of uniform field, is being considered as higher contraction
Than except, lesser cell dimensions are also selected, be 4.8mm.
Specifically, the seal cavity 7 is also provided with door body (not shown), the size of the door body is 1 × 1.5m,
Testee enters in seal cavity 7 from door body, and people can enter in seal cavity, carries out operation control.
Specifically, what the seal cavity 7 was made of insulation board, the outer surface of the insulation board is coated with waterproof cement, institute
The size for stating seal cavity is 2 × 2.8 × 2.2m.
Specifically, the top of the seal cavity 7 is additionally provided with hanging plate (not shown), offered on the hanging plate more
A hole, for hanging instrument to be calibrated.
Specifically, the evaporator 4 specifically includes: the first evaporator, the second evaporator, third evaporator.
Specifically, the diameter of the efflux nozzle of the jet stream wind-tunnel is 300mm.
As shown in Figure 1, the length of the control room of the controller be a, a=2000mm, the wall to evaporator away from
It is c, c=805mm from the distance for b, b=1555mm, the evaporator to jet stream wind-tunnel, the length of the jet stream wind-tunnel is d,
D=3770mm, the distance of the jet stream wind-tunnel to another wall are c, c=8520mm.
The wind speed based on jet stream wind-tunnel, pressure, temperature calibration system in the utility model have compared with the existing technology
Following advantages:
Calibration system in the utility model can be realized by being arranged jet stream wind-tunnel in seal cavity to wind speed, pressure
The accurate simulation of power, temperature, and then can be realized and all appts of environmental classes are demarcated, for example, particle sampler exists
Cutting efficiency under different wind speed has what variation, variation of the gas apparatus under different pressure and different temperatures, ring
Border influence of the exposure storehouse to people, animal, and minimum in the utility model can simulate subzero 20 degrees Celsius to subzero 30 of low temperature
Degree Celsius environment, flow through stable section peak flow rate (PFR) be 0.64m/s.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Specific case used herein is expounded the principles of the present invention and embodiment, above embodiments
Explanation be merely used to help understand the method and its core concept of the utility model；Meanwhile for the general technology of this field
Personnel, based on the idea of the present invention, there will be changes in the specific implementation manner and application range.In conclusion
The content of the present specification should not be construed as a limitation of the present invention.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821397667.XU CN208537061U (en) | 2018-08-29 | 2018-08-29 | A wind speed, pressure and temperature calibration system based on jet wind tunnel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821397667.XU CN208537061U (en) | 2018-08-29 | 2018-08-29 | A wind speed, pressure and temperature calibration system based on jet wind tunnel |
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| Publication Number | Publication Date |
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| CN208537061U true CN208537061U (en) | 2019-02-22 |
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| CN201821397667.XU Active CN208537061U (en) | 2018-08-29 | 2018-08-29 | A wind speed, pressure and temperature calibration system based on jet wind tunnel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709666A (en) * | 2018-08-29 | 2018-10-26 | 中国环境科学研究院 | A kind of wind speed based on jet stream wind-tunnel, pressure, temperature calibration system |
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2018
- 2018-08-29 CN CN201821397667.XU patent/CN208537061U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709666A (en) * | 2018-08-29 | 2018-10-26 | 中国环境科学研究院 | A kind of wind speed based on jet stream wind-tunnel, pressure, temperature calibration system |
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