CN2896255Y - Down-fitted vertical wind-tunnel of power system - Google Patents
Down-fitted vertical wind-tunnel of power system Download PDFInfo
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- CN2896255Y CN2896255Y CN 200620118280 CN200620118280U CN2896255Y CN 2896255 Y CN2896255 Y CN 2896255Y CN 200620118280 CN200620118280 CN 200620118280 CN 200620118280 U CN200620118280 U CN 200620118280U CN 2896255 Y CN2896255 Y CN 2896255Y
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Abstract
The utility model relates to a vertical wind tunnel, in particular to a power system below vertical wind tunnel, which comprises a power system, a support and a working tunnel, wherein the working tunnel is composed of a stabilization section, a contraction section and a working section, the power system is positioned below the working wind tunnel, the power system blows in the air from under the working tunnel and then flows out from the top of the working tunnel after passing the working tunnel; and the power system is composed of at least two motors and a fan system. The power system below vertical wind tunnel of the utility model can not only reduce weight and vibration of the support and lower requirement for intensity of the support, but also can greatly reduce the cost for installation and make the equipment overhaul more conveniently. Meanwhile, the power system of the utility model adopts a plurality of motors and fans to establish and regulate the air flow speed in the working section and can adopt low-voltage power supply. The system has low noise and low cost, is easy to manufacture, install, maintain and replace, operates flexibly and variably and has great potential in power conservation.
Description
Technical field
The utility model relates to a kind of vertical wind tunnel, relates in particular to a kind of power system lower vertical wind tunnel.
Background technology
A kind of special ground test equipment---the vertical wind tunnel of aviation field just builds up many as far back as last century with the developed country headed by the U.S..In recent years, in order to carry out parachutist and parachutist training in control of fall stage health and artistic performance, the rise of and a kind of fashion Leisure Sport campaign---fleet-footed runner motion, aviation vertical wind tunnel developed and develop into a kind of new civilian be main fleet-footed runner's motion vertical wind-tunnel.High velocity air in the vertical wind tunnel flight capsule can make parachutist and parachutist obtain the training of high-efficiency high-quality, also can make airhog's obtain to hover enjoyment of sky.Up to the present, European and American countries has been built up many this flight capsule equipment.The number that the U.S. builds up is maximum, and has obtained widespread use.A kind of vertical wind tunnel training system is disclosed for No. 6083110 such as United States Patent (USP), this wind-tunnel is open type (promptly funnel-shaped), dependence places several fans on wind-tunnel top as its power system, effect by these several fans, working gas in the wind-tunnel is discharged in the external environment, air pressure in the wind-tunnel will be lower than external atmosphere pressure, thereby make outside air enter wind-tunnel by the air intake of its underpart, realize the circulation of working gas.U.S. Pat 2006/0025227A1 discloses another kind of vertical wind tunnel system schema, and this wind-tunnel is a kind of return circuit wind tunnel, produces high velocity air and realize backflow in flight capsule by fan system and the complicated pipelines system that places top.
But, the power system of existing vertical wind tunnel is general adopt single large-size machine, fan system or on put a plurality of motors, fan system, on the power system of putting support intensity is required height, cost height, and exist and make, install, maintenance, change the shortcoming of difficulty; Power system adopts single large-size machine, fan system, and power demand is big, to the power requirement height, cost an arm and a leg, and highly big, noise is big, has increased the height and the environmental pollution of entire equipment.At present, developed country and China are developing novel, economic, safe, comfortable vertical wind tunnel energetically, so that better meet the requirement of training and amusement aspect.
The utility model content
The purpose of this utility model provides that a kind of power demand is low, and noise is lower, and installation, maintenance is power system lower vertical wind tunnel easily.
Be realization the utility model purpose, and propose following technical scheme:
A kind of vertical wind tunnel, comprise power system, support and comprise the work hole body of stabilizing section, contraction section, active section, it is characterized in that: described power system places body below, wind-tunnel work hole, described power system is blown into air from work body bottom, hole, pass behind the body of work hole to flow out from work body top, hole.
Above-mentioned vertical wind tunnel, described power system comprises at least two motors, fan system.
Above-mentioned vertical wind tunnel, described power system also comprise a gas collection section, and described gas collection section is arranged between described fan system and the described work hole body, and its underpart links to each other with described fan system exit, and its top links to each other with described work hole body.
Above-mentioned vertical wind tunnel, described gas collection section also has a conical inner body, described conical inner body and work hole body concentric, the bottom places on the wind-tunnel ground, and height equates that with described gas collection section the drift angle angle is 45 ° to 60 °.
Above-mentioned vertical wind tunnel is provided with honeycomb in described stable section, and the grid bore of described honeycomb is 50 to 60mm, and length is 500 to 600mm, and the shrinkage ratio of described contraction section is 2.5 to 4.0.
Above-mentioned vertical wind tunnel, described active section xsect is a polygon.
Above-mentioned vertical wind tunnel also has shell, and described shell upper is provided with at least one exhausting window, and the bottom is provided with at least one air intake window, and exhausting window lower position place is provided with damping screen between wind-tunnel inner shell and work hole body.
Above-mentioned vertical wind tunnel, described work hole body also has diffuser, and described diffuser is positioned at the active section top, and links to each other with active section, and its junction is provided with the transition fill block, and the diffusion angle of described diffuser is 8 ° to 12 °.
Above-mentioned vertical wind tunnel, described shell makes by transparency material at the active section place at least with work hole body or described work hole body inwall is provided with electronic curtain or picture at the active section place at least.
Above-mentioned vertical wind tunnel also is provided with the backflow air deflector, described backflow air deflector be back-off have the bowl-shape of center taper thing.
Good effect of the present utility model is: (1) is compared with existing overhead power system, the utility model not only can alleviate the weight and the vibration of rack bearing, reduction is to the requirement of support intensity, and can reduce installation cost greatly, and is convenient to overhaul of the equipments.(2) power system of the present utility model adopts a plurality of motors, fan to set up and regulate the interior gas velocity of active section, compare with traditional single large-size machine, fan system, can adopt low-tension supply, economical operation, convenience, it is low to have noise simultaneously, cost is low, has reduced the overall height of wind-tunnel, is easy to make, the advantage of installation, maintenance, replacing; And can be according to user's what and demand, motor, the combination of fans of starting varying number, so flexible operation is changeable, energy conservation potential is big.The very important point is when one group of motor wherein, when fan breaks down suddenly in addition, and the motor of other group, fan still can operate as normal, thereby can avoid the generation of security incident effectively.(3) shell of power system lower vertical wind tunnel of the present utility model and work hole body are made by transparency material in the active section district at least, the hole body inwall of perhaps working is provided with electronic curtain or picture at the active section place at least, makes aviator's can obtain to hover truly feels of sky.(4) in addition, power system of the present utility model is provided with the gas collection section, avoids many desk fan outlets to be directly connected to the sudden enlargement that forms area when stable section enters the mouth, and has improved air-flow, has reduced energy loss.The setting of honeycomb makes air-flow vertical more and stable.(5) active section xsect of the present utility model is a polygon, is convenient to mounting plane glass, and processing cost also reduces greatly.
Description of drawings
Fig. 1 is the structural representation of power system lower vertical wind tunnel of the present utility model.
Fig. 2 is a power system blower fan plane of arrangement synoptic diagram.
Fig. 3 is the active section schematic cross-section.
Fig. 4 is the structural representation of the another kind of version of the utility model power system lower vertical wind tunnel.
Embodiment
The utility model will be further described below in conjunction with drawings and Examples, but should be noted that these embodiment only are used to scheme of the present utility model is described, and scope of the present utility model can not be confined to this.
As shown in Figure 1, power system lower vertical wind tunnel of the present utility model is the indoor annular backflow vertical wind tunnel of power system lower, has following a few major part: the power system 1 of underlying, shell 2, support 3, work hole body 4, and backflow air deflector 5.Below respectively with regard to these several most of principle of work that native systems are described.
In the present embodiment, power system of the present utility model is different from the overhead power system of existing wind-tunnel, but power system 1 is placed the bottom of whole vertical wind tunnel, compare with the overhead power system, She Ji advantage is the weight and the vibration that not only can alleviate support 3 carryings like this, and can reduce installation cost greatly, and be convenient to overhaul of the equipments.As shown in Figure 1, place below ground in this embodiment even with power system 1, reduced especially hole external noise of noise simultaneously.
As shown in Figure 1, power system lower vertical wind tunnel of the present utility model also comprises a shell 2, this makes the work hole body 4 of wind-tunnel of the present utility model be in indoor that shell 2 forms, though whole wind-tunnel system places the outside atmosphere environment, but be not subjected to external environment and climatic influences, can round-the-clock running, improved service efficiency greatly.
Support 3 is arranged between shell 2 and the work hole body 4, be used for structures such as supporting shell 2, work hole body 4 and backflow air deflector 5, because the utility model is with power system 1 underlying, the weight and the vibration of support 3 carryings have been alleviated, requirement of strength for support 3 just reduces greatly, and cost just can significantly lower.
Work hole body 4 is major parts of wind-tunnel, air is entered by the bottom of work hole body 4, flow out from work body 4 tops, hole, shown in the direction of arrow among Fig. 1, work of the present utility model hole body 4 mainly comprises stable section 42, contraction section 43, active section 44, diffuser 45.
The effect of backflow air deflector 5 be will from work body 4 tops, the hole air transition flow that flow out vertically upward to, change into vertically downward, thereby the annular that realizes the utility model wind-tunnel refluxes.Backflow air deflector 5 be shaped as back-off have the bowl-shape of center taper thing, the profile of its indent and split-flow baffles 51 and fairing, being beneficial to airflow direction changes 180 ° downwards, and reduces energy loss.
More than be the narration of native system principle of work,, the utility model be described in detail below in conjunction with specific embodiment.
As shown in Figure 1, power system 1 is placed in below ground in this embodiment, and the power system 1 of present embodiment comprises six groups of electric systems 11, and every group of electric system 11 comprises motor 111 and fan 112, be evenly horizontally disposed at below ground, as shown in Figure 2 with the annular of work hole body 4 concentrics.Every power of motor is 132 to 220 kilowatts.Certainly, the utility model can also adopt the electric system of other number, can adopt flexible and changeable various motors, combination of fans as required.The setting of many group low-power machines has been avoided adopting single large-size machine, fan system, can adopt the low-tension supply of 380V, convenient operation.Simultaneously, adopt many group micro-machines, fan system, noise is low, and cost is low, has reduced the overall height of wind-tunnel, is easy to manufacturing, installation, maintenance, replacing; And can start motor, the fan of varying number, so flexible operation be changeable according to wind-tunnel user's what and demand, energy conservation potential is big.The very important point is when one group of motor wherein, when fan breaks down suddenly in addition, and the motor of other group, fan still can operate as normal, thereby can avoid the generation of security incident effectively.In addition, motor 111 drives fan 112 rotations by transmission shaft in the electric system 11, can shorten the fan segment length, and help motor radiating, can turn round for a long time.
When wind-tunnel of the present utility model is started working, motor 111, fan 112 are opened, air enters fans entrance section 121, fans entrance section 121 and outlet section 122 are respectively equipped with turning vane in corner 113 and 114, can make the air-flow that enters vertically downward become horizontal direction earlier in the porch of fan 112, and then become steadily outflow vertically upward, thereby farthest reduced energy loss.
As shown in Figure 1, the power system 1 of power system lower vertical wind tunnel of the present utility model also comprises a gas collection section 141, designed a conical inner body 1411 in the gas collection section 141, described conical inner body 1411 is made by steel or other material, be positioned at gas collection section 141 centers, with work hole body 4 concentrics, height is close with gas collection section 141, and the drift angle angle is 45 ° to 60 °.The effect of described conical inner body 1411 is to cooperate the outer wall of gas collection section 141 that the xsect of gas collection section 141 is risen along with air-flow and expansion gradually, thereby the exit flow from a plurality of fans 112 is slowed down, enter work hole body 4 reposefully, thereby form the sudden enlargement of area when having avoided that fan 112 outlet is directly connected to work hole body 4, reduced energy loss.
Air-flow enters stable section 42 of work hole body 4 by the bottom more reposefully by gas collection section 141, makes air-flow honeycomb 421 vertically upward what stable section 42 also was equipped with, and the honeycomb lattice bore of described honeycomb 421 is 50 to 60mm, and length is 500 to 600mm.
After working air current enters contraction section 43, for the air-flow that guarantees to enter active section 44 evenly, stable, the side of contraction section 43 is the contractive effect good stream shape, shrinkage ratio (shrinkage ratio is an inlet area and the ratio of discharge area) is 2.5 to 4.0.
Active section 44 bottoms are provided with safety net 440, safety net 440 can guarantee that the personnel in the active section 44 in any case can not crash into active section 44 belows, and when personnel fall and safety net 440 bump against and damage, safety net 440 needs the elasticity of enough intensity and appropriateness.
Active section 44 bores are 3 to 4 meters, highly are 3 to 6 meters, and inner wind speed is 50 to 65 meter per seconds.Active section 44 is divided into active section 441 and last active section 442 down, and the outer wall of following active section 441 is straight wall, helps obtaining stable air-flow.Last active section 442 is the low-angle expansion segment, the full-shape of expansion angle is 6 ° to 8 °, increases (air viscosity formed one deck low velocity gas thin layer on body surface is called boundary-layer or boundary layer) and avoids aircrew's lapse rate too fast with boundary-layer on the compensation wall.Should go up active section 442 is main movement area, and promptly personnel mainly carry out flight training or amusement in this section.In the present embodiment, active section 44 and shell 2 are octagon with active section 44 corresponding section xsects, as shown in Figure 3, compare with circle, are more convenient for installing glass, and processing cost also reduces greatly.Certainly, in other embodiments, this xsect also can other polygon or circle.The side of active section 44 is provided with workplace and stops district's (not shown), is convenient to staff's control and trainer and aviator and stops when wind-tunnel is worked, has a rest.Active section 44 and diffuser 45 junctions are provided with transition fill block 450, and the polygonal cross-section that active section 44 is exported carries out the transition to circle, with diffuser 45 good being connected to be arranged.
In active section 44, for the aviator can being obtained hover the truly feels of sky, shell of the present utility model 2 and work hole body 4 and active section 44 corresponding sections by transparent material as: glass, acrylic etc. is made, shell 2 remainders can be opaque material, as being made by fiberglass, metal etc., work hole body 4 remainders are that steel or other material are made.Certainly, if work hole body inwall is provided with electronic curtain or picture at the active section place at least, also can obtain similar effect.
Diffuser 45 is positioned at active section 44 tops, the diffusion angle of diffuser 45 (spread angle is angle between the expansion wall) is 8 ° to 12 °, (too small diffusion angle causes diffuser long to reduce height and to avoid taking place burbling as far as possible, excessive spread angle makes the flow shedding wall, causes separation flow) reduce energy loss.
The effect of backflow air deflector 5 be will from work body 4 tops, the hole air transition flow that flow out vertically upward to, change into vertically downward, thereby the annular that realizes the utility model wind-tunnel refluxes.Backflow air deflector 5 be shaped as back-off have the bowl-shape of center taper thing, the orifice plate 52 that the profile of its indent and built-in multilayer split-flow baffles 51 and round platform surface form will reduce the loss of energy to greatest extent, and helps turning to of air-flow.The fairing that refluxes in the present embodiment in the air deflector 5 is the orifice plate 52 that the round platform surface forms, and certainly, also can be other form in other embodiments.
Working air current enters reflux section 46 between shell 2 and work hole body 4 downwards along backflow air deflector 5, is sent to fans entrance section 121 under the road direction then, has so just finished the cyclic process of working air current in wind-tunnel of the present utility model.
In addition, be unlikely to too high for making the temperature through the working gas in the wind-tunnel behind the long-play, guarantee that simultaneously the air in the active section 44 keeps fresh, shell 2 tops are provided with several exhausting windows 21, and the bottom is provided with several air intake windows 22.At any time all can according to circumstances control air inflow, the working gas that portion temperature is raise can be discharged the wind-tunnel system by exhausting window 21,21 lower position places are provided with damping screen 211 at exhausting window, make the air pressure of damping screen 211 tops be a bit larger tham the external environment atmospheric pressure, the working gas of being convenient to heat can be discharged in right amount, simultaneously, this net also helps further to reduce the noise in the reflux section 46.Meanwhile, be provided with a plurality of air intake windows 22 below reflux section 46, the fresh air in the external environment replenishes air intake hole system at any time by air intake window 22, and is suitable, fresh to guarantee the working gas temperature during long-play in the wind-tunnel.
Reach the gas collection section around the fan and be provided with quieter and quieter material (not shown), guaranteed that wind-tunnel of the present utility model has the low noise characteristics.
Be provided with the elevator (not shown) between shell 2 and the work hole body 4, to make things convenient for personnel's active section 44 of coming in and going out.
Embodiment 2
As shown in Figure 4, different with the indoor annular backflow vertical wind tunnel of the power system lower among the embodiment 1, power system lower vertical wind tunnel in the present embodiment is not provided with shell, power system lower vertical wind tunnel for a kind of open type, has following a few major part: the power system 1 of underlying, support 3 and work hole body 4.
As shown in Figure 4, basic identical among present embodiment medium power system 1 and work hole body 4 and the embodiment 1, power system 1 also is to place below ground, be evenly horizontally disposed with the annular of work hole body 4 concentrics, work hole body 4 also comprises stable section 42, contraction section 43, active section 44, diffuser 45.
The hole body 4 of working in other embodiments can not comprise diffuser, to reduce the wind-tunnel height.。
Present embodiment medium-height trestle 3 (not shown) place body 4 outsides, work hole, be used to support work hole body 4, because the utility model is with power system 1 underlying, owing to there are not structures such as shell, the weight and the vibration of support 3 carryings have been alleviated, requirement of strength for support 3 just reduces greatly, and cost just can significantly lower.
In other embodiments, basic identical among power system lower vertical wind tunnel and the foregoing description 1 or the embodiment 2, but for easy for installation, the power system of underlying also can be not interposing among the melt pit, but place more than the ground; At this moment, because air flow can not be subjected to the influence of melt pit, and equipment is simplified more.
Obviously, the foregoing description of the present utility model only is for the utility model example clearly is described, and is not to be qualification to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And these belong to conspicuous variation or the change that spirit of the present utility model extended out and still are among the protection domain of the present utility model.
Claims (10)
1, a kind of vertical wind tunnel, comprise power system, support and comprise the work hole body of stabilizing section, contraction section, active section, it is characterized in that: described power system places body below, wind-tunnel work hole, described power system is blown into air from work body bottom, hole, pass behind the body of work hole to flow out from work body top, hole.
2, vertical wind tunnel according to claim 1 is characterized in that: described power system comprises at least two motors, fan system.
3, vertical wind tunnel according to claim 2, it is characterized in that: described power system also comprises a gas collection section, described gas collection section is arranged between described fan system and the described work hole body, and its underpart links to each other with described fan system exit, and its top links to each other with described work hole body.
4, vertical wind tunnel according to claim 3, it is characterized in that: described gas collection section also has a conical inner body, described conical inner body and work hole body concentric, and the bottom places on the wind-tunnel ground, height equates that with described gas collection section the drift angle angle is 45 ° to 60 °.
5, according to claim 1,2,3 or 4 described vertical wind tunnels, it is characterized in that: be provided with honeycomb in described stable section, the grid bore of described honeycomb is 50 to 60mm, and length is 500 to 600mm, and the shrinkage ratio of described contraction section is 2.5 to 4.0.
6, according to claim 1,2,3 or 4 described vertical wind tunnels, it is characterized in that: described active section xsect is a polygon.
7, according to claim 1,2,3 or 4 described vertical wind tunnels, it is characterized in that: also have shell, and described shell upper is provided with at least one exhausting window, and the bottom is provided with at least one air intake window, and exhausting window lower position place is provided with damping screen between wind-tunnel inner shell and work hole body.
8, vertical wind tunnel according to claim 7, it is characterized in that: described work hole body also has diffuser, and described diffuser is positioned at the active section top, and links to each other with active section, its junction is provided with the transition fill block, and the diffusion angle of described diffuser is 8 ° to 12 °.
9, vertical wind tunnel according to claim 7 is characterized in that: described shell makes by transparency material at the active section place at least with work hole body or described work hole body inwall is provided with electronic curtain or picture at the active section place at least.
10, vertical wind tunnel according to claim 7 is characterized in that: also be provided with the backflow air deflector, described backflow air deflector be back-off have the bowl-shape of center taper thing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620118280 CN2896255Y (en) | 2006-06-06 | 2006-06-06 | Down-fitted vertical wind-tunnel of power system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620118280 CN2896255Y (en) | 2006-06-06 | 2006-06-06 | Down-fitted vertical wind-tunnel of power system |
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| Publication Number | Publication Date |
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| CN2896255Y true CN2896255Y (en) | 2007-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200620118280 Expired - Fee Related CN2896255Y (en) | 2006-06-06 | 2006-06-06 | Down-fitted vertical wind-tunnel of power system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101696695B (en) * | 2009-10-23 | 2011-11-23 | 上海鼓风机厂有限公司 | Axial flow compressor serially connected by multiple single-stage axial flow fans in L-shaped arrangement |
| CN107907294A (en) * | 2017-12-21 | 2018-04-13 | 钦州学院 | The open smoke wind tunnel demonstrator and its method in a kind of noiseless source |
| CN116351076A (en) * | 2023-05-06 | 2023-06-30 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Vertical recreation wind tunnel |
-
2006
- 2006-06-06 CN CN 200620118280 patent/CN2896255Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101696695B (en) * | 2009-10-23 | 2011-11-23 | 上海鼓风机厂有限公司 | Axial flow compressor serially connected by multiple single-stage axial flow fans in L-shaped arrangement |
| CN107907294A (en) * | 2017-12-21 | 2018-04-13 | 钦州学院 | The open smoke wind tunnel demonstrator and its method in a kind of noiseless source |
| CN116351076A (en) * | 2023-05-06 | 2023-06-30 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Vertical recreation wind tunnel |
| CN116351076B (en) * | 2023-05-06 | 2024-01-19 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Vertical recreation wind tunnel |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070502 Termination date: 20100606 |