CN2814374Y

CN2814374Y - Air tunnel testing device

Info

Publication number: CN2814374Y
Application number: CN 200520012433
Authority: CN
Inventors: 袁金谦
Original assignee: YOUQIAN ENTERPRISE CO Ltd
Current assignee: YOUQIAN ENTERPRISE CO Ltd
Priority date: 2005-04-25
Filing date: 2005-04-25
Publication date: 2006-09-06
Anticipated expiration: 2015-04-25

Abstract

The utility model relates to an air tunnel testing device which comprises a blowing section, an upstream rectifying network section, a flow meter section, a downstream rectifying network section and a section to be detected, wherein the flow meter section is provided with a fixing plate and a rotary plate, and a perforation is arranged at the center of the fixing plate. The rotary plate is eccentrically pivoted on the fixing plate and is provided with a plurality of nozzles. The rotary plate is controlled, and thus, the nozzles selected on the rotary plate can displace and are positioned in the perforation at the center of the fixing plate to form a circulating canal for wind power.

Description

The wind tunnel test device

Technical field

The utility model relates to a kind of wind tunnel test device, refers to that especially a kind of centre in fixed head is provided with the wind tunnel test device that a perforation is put for a plurality of different size specification nozzle selection of rotating disk.

Background technology

The general traditional fan or the manufacturer of other pressure fans, the fan performance measurement mechanism of being set up often uses very simple and crude airduct, only can measure the air quantity and the static pressure of fan.

For really having the dealer to develop in addition, refinement the iron sheet system wind tunnel test device that a cover is set up according to AMCA 210 standards, but this wind tunnel test device subentry air type design (Inlet Chamber) and outlet air formula design (Outlet Chamber) are the tests of system impedance curve with what carry out suction-type and blowing-type fan performance curve and heat radiator.

Please refer to Fig. 6, be to show known wind tunnel test schematic representation of apparatus, this known wind tunnel test device 200, comprise: air-supply section 6, upstream rectifying barrier section 7, flowmeter section 8, downstream screens section 9 reach in order to put the section to be measured 10 of undetected object (for example fan), wherein: the external pressure fan of the left end of aforementioned air-supply section 6 (indicating); The rectification mesh purpose area ratio of aforementioned upstream rectifying barrier section 7 and downstream screens section 9 is dredged with flow direction and is followed successively by 60%, 57%, 54% to close; Aforementioned flowmeter section 8 has a fixed head 80 (shown in Fig. 7 A and Fig. 7 B) that is equiped with the nozzle 81 of plural different size, this plural number nozzle 81 has the apertures of different sizes according to the specification difference, and each nozzle 81 all is provided with the stopper 82 of a correspondence, in order to clog pairing nozzle 81.

When desire is tested the fan of a certain specification, need to select a wherein nozzle 81 of suitable this fan specification with manual type, and with 82 taking-ups of the stopper on this nozzle 81, making only has a nozzle 81 to present the state of path, by aforementioned pressure fan wind is imported aforementioned air-supply section 6, and the wind of pressure fan being sent into by the screens of aforementioned upstream rectifying barrier section 7 is smooth and make wind-force average, again with average wind-force via the nozzle 81 of this opening to produce a pressure reduction, with the performance of test undetected object (fan).

Yet, though known wind tunnel test device 200 can reach the performance that will record fan, but the fan of at every turn testing different size is when choosing suitable nozzle 81, need to take out the corresponding stopper 82 of this suitable nozzle 81 with manual type, and when testing the fan of next different size, need the nozzle stopper that last time is selected to get back into former nozzle again, again that this is suitable stopper takes off, to test.So each test all needs mode that the stopper of different spray nozzles is got back into and taken off with manual type, not only moves loaded down with trivial details and causes temporal waste, remains in fact to be improved; And the nozzle of selected different size is to be positioned at the eccentric part of fixed head 80 but not to be positioned at centre, does not easily cause rectification effect good and influence test result.

The utility model content

The purpose of this utility model is to provide a kind of wind tunnel test device, and the centre of its fixed head is provided with a perforation and puts for a plurality of different size specification nozzle selection of rotating disk, to reach usefulness and the performance rectification effect that robotization picks and places different spray nozzles.

A kind of wind tunnel test device of the utility model comprises: air-supply section, upstream rectifying barrier section, flowmeter section, downstream screens section and section to be measured, it is characterized in that,

Aforementioned flowmeter section is provided with a fixed head and rotating disk, this fixed head centre is provided with a perforation, aforementioned rotating disk is to be hubbed on the aforementioned fixation plate and to be provided with a plurality of nozzles with eccentric manner, the control rotating disk, can make nozzle on the selected rotating disk produce displacement and be positioned the perforation of aforementioned fixation plate centre, to form the path of wind-force circulation.

The preferably, aforementioned rotating disk is to control it with the driving fit of fixed head and separate by pneumatic cylinder.

The preferably, aforementioned rotating disk is to control it by motor to rotate and the location.Description of drawings

For further specifying technology contents of the present utility model, below in conjunction with embodiment and accompanying drawing describes in detail as after, wherein:

Fig. 1 is the utility model wind tunnel test schematic representation of apparatus.

Fig. 2 A is the front view of the fixed head of the utility model wind tunnel test device, and shows the synoptic diagram of the rotating disk that is hubbed at its back side.

Fig. 2 B is the sectional view of Fig. 2 A line X-X, demonstrates rotating disk is fixed in fixed head with a nozzle perforation in detail.

Fig. 3 A is the action diagram of Fig. 2 B, shows that rotating disk is located away from fixed head.

Fig. 3 B is the front view of the fixed head of the utility model wind tunnel test device, and shows and to have rotated the rotating disk shown in Fig. 3 A, makes rotating disk be positioned the perforation of fixed head with another nozzle.

Fig. 3 C is the sectional view of Fig. 3 B line Y-Y.

Fig. 4 is same as the graphic of Fig. 3 A but section not, mainly demonstrates step motor and pneumatic cylinder.

Fig. 5 is same as the graphic of Fig. 3 C but section not, mainly demonstrates step motor and pneumatic cylinder.

Fig. 6 is known wind tunnel test schematic representation of apparatus.

Fig. 7 A is the synoptic diagram of the fixed head that is provided with plural nozzle of known wind tunnel test device.

Fig. 7 B is the sectional view of Fig. 7 A line Z-Z.

Embodiment

Please refer to Fig. 1, is to show the utility model wind tunnel test schematic representation of apparatus.The utility model wind tunnel test device 100, comprise: air-supply section 1, upstream rectifying barrier section 2, flowmeter section 3, downstream screens section 4 and section to be measured 5, wherein aforementioned air-supply section 1 peripheral hardware one pressure fan (figure does not show), and aforementioned flowmeter section 3 is provided with fixed head 30 and rotating disk 31.

Please continue with reference to figure 1 and cooperate Fig. 2 A and Fig. 2 B, the rectification mesh purpose area ratio of aforementioned upstream rectifying barrier section 2 and downstream screens section 4 is followed successively by 60%, 57%, 54% by dredging to close with flow direction.The centre of aforementioned fixation plate 30 is provided with a perforation 32, and this perforation 32 is nozzle 34a, the 34b for different size, the usefulness of 34c storing.Aforementioned rotating disk 31 is provided with

nozzle

34a, 34b, the 34c of a plurality of different size specifications, this

nozzle

34a, 34b, 34c are designed according to the specification of international standard, only be provided with three nozzles in the present embodiment for example, this rotating disk 31 is the eccentric parts that are hubbed at aforementioned fixation plate 30 with rotating shaft 33.

The running of relevant rotating disk 31 will be described in detail as follows.Please continue also to cooperate with reference to figure 3A to Fig. 3 C with reference to figure 2A and Fig. 2 B, when desire is tested the fan of a certain specification, at first select to cooperate a wherein nozzle of the required specification of fan, for example the nozzle of Xuan Zeing is nozzle 34b, and rotating disk 31 makes fixed head 30 separate with rotating disk 31 by the promotion of a pneumatic cylinder 50 (ginseng Fig. 4) and forms a distance 9 (as Fig. 3 A and shown in Figure 4) at this moment; And drive aforementioned rotating disk 31 and aforementioned rotating disk 31 is rotated by step motor 40 again, make the nozzle 34b of aforementioned rotating disk 31 produce the perforation 32 that is moved to aforementioned fixation plate 30 centre, drive pneumatic cylinder 50 once more and make rotating disk 31 driving fits in fixed head, make the nozzle 34b of rotating disk 31 be positioned to bore a hole 32, shown in Fig. 3 B (please in the lump referring to Fig. 3 C and Fig. 5).At this moment, but pass through because of aforementioned rotating disk 31 airtight designs only have aforementioned nozzle 34b air feed power, all the

other nozzle

34a and 34c then is closed state and can't allow fluid pass through are shown in Fig. 3 C (please in the lump referring to Fig. 5).Thereby, by pressure fan wind is imported aforementioned air-supply section 1, and the wind of pressure fan being sent into by the screens of aforementioned upstream rectifying barrier section 2 is smooth and make wind-force average, again with the nozzle 34b of average wind-force via aforementioned rotating disk 31 location, produce a pressure reduction, can test the performance of determinand fan.If when desiring to test the fan of another different size again, after only need selecting to cooperate the nozzle of the required specification of fan, as before, drive aforementioned rotating disk 31, make the automatic displacement of selected suitable nozzle and be positioned to the perforation 32 of aforementioned fixation plate 30 centre by the running of motor and pneumatic cylinder.

Advantage of the present utility model is that perforation is a centre of being located at fixed head, can make the wind-force that passes through be easy to be brought into play by rectification the rectification effect of device; And the rotating disk of robotization is hubbed at the eccentric part of fixed head and is provided with a plurality of different size specification nozzles available to be placed in aforementioned perforation, can reach the usefulness that robotization picks and places different spray nozzles.

After describing preferred embodiment of the present utility model in detail, being familiar with this technology personage can clearly understand, can carry out various variations and change not breaking away under following claim and the spirit, and the utility model also is not subject to the embodiment of the embodiment of instructions.

Claims

1, a kind of wind tunnel test device comprises: air-supply section, upstream rectifying barrier section, flowmeter section, downstream screens section and section to be measured, it is characterized in that,

2, wind tunnel test device as claimed in claim 1 is characterized in that, wherein aforementioned rotating disk is to control it with the driving fit of fixed head and separate by pneumatic cylinder.

3, wind tunnel test device as claimed in claim 1 is characterized in that, wherein aforementioned rotating disk is to control it by motor to rotate and the location.