CN203337361U

CN203337361U - Dedicated soil wind erosion collector for wind tunnel

Info

Publication number: CN203337361U
Application number: CN2013201896525U
Authority: CN
Inventors: 赵爱国; 董治宝; 李宏; 肖建华; 赵晶
Original assignee: Cold and Arid Regions Environmental and Engineering Research Institute of CAS
Current assignee: Cold and Arid Regions Environmental and Engineering Research Institute of CAS
Priority date: 2013-04-16
Filing date: 2013-04-16
Publication date: 2013-12-11
Anticipated expiration: 2023-04-16

Abstract

The utility model relates to a dedicated soil wind erosion collector for a wind tunnel. The collector consists of a sand and dust collecting chamber, a sand and dust collecting funnel, a sand collecting bottle, and an electronic balance. The front of the sand and dust collecting chamber is provided with a sand inlet. Wind erosion samples in a test section, which is 500mm far from the front of the sand and dust collecting chamber, are all blown into the sand inlet by an air flow generated by a blower, and are held back in the sand and dust collecting chamber. After a time period of wind erosion, the blower is turned off and then a valve of the funnel is opened. Sand and dust in the sand and dust collecting funnel flow into the sand collecting bottle below. The collector provided by the utility model is simple in structure, convenient for operation, strong in practicality, and low in cost. The collector can collect all the sand and dust wind erosion in the scope from the ground to a position which is 30cm from the ground in a sand flow field. The sand inlet with a large diameter solves a problem that there is an error in sediment discharge at a certain wind speed, thereby guaranteeing the accuracy of sediment discharge at the wind speed and providing a reliable test condition for studying the characteristics of sand movement at a certain wind speed.

Description

A kind of wind-tunnel special-purpose soil wind erosion gatherer

Technical field

The utility model relates to oneplant wind-tunnel special-purpose soil wind erosion gatherer.

Background technology

The blowing sand wind tunnel test is the large-scale instrument and equipment designed for simulation field dust storm phenomenon.Blowing sand wind tunnel generally is divided into the parts such as power system, steady flow segment, contraction section, test section and diffuser.In the simulated experiment of carrying out the dust storm phenomenon, wind speed changes continuously speed governing in the scope of 2 meter per seconds～40 meter per seconds, and the wind speed size is completed by the manual control variator.In the scientific experiment activity, the mensuration of husky flux is that the research dust storm plays jump mechanism, carries out an important physical amount of research and the engineering calculation of stream.In the experimental study of husky wind-tunnel observation wind-driven sediment, there is such problem, when gas velocity reaches a certain wind speed, need a period of time, yet when wind speed reaches in the process of the stable value of drafting, variation has occurred in husky bed surface in blowing sand wind tunnel, and husky test chamber settles the sand instrument to enter the grains of sand of saltation, causes sedimentary loading under a certain wind speed that error is arranged.

Summary of the invention

The purpose of this utility model provides for addressing the above problem exactly oneplant wind-tunnel special-purpose soil wind erosion gatherer.

The purpose of this utility model can reach by following measures:

oneplant wind-tunnel special-purpose soil wind erosion gatherer, by the sand and dust collecting chamber, sand and dust collection funnel, the husky bottle of collection and electronic balance composition.Sand and dust collecting chamber shape is that left and right, square bottom has connecting hole, sand and dust collection funnel shape is upper square lower circular funnel, bottom surface is up big and down small husky passage, the circular funnel of husky passage place is provided with valve, the husky bottle of sand and dust collection funnel aligned beneath collection, the husky bottle of collection is placed on electronic balance collects the sand and dust sample, the sand and dust collection funnel is installed to blowing sand wind tunnel test section bottom, the test section bottom has two square holes, place, hole, lower wind direction side puts into the sand and dust collecting chamber and embeds the square top of sand and dust collection funnel, put into the wind erosion sample of fetching in field in the upwind hole in place, sand and dust collecting chamber the place ahead test section, the fair surrounding of sample face and test section bottom is lined with sponge block, sand and dust collecting chamber front has sand inlet, the back that sand inlet is relative is exhausr port, be furnished with nylon screen on exhausr port, the factor of porosity of net is 200 orders, below has on sand and dust passage passway stainless steel mesh is arranged, the factor of porosity of net is 18 orders, bolt is fastening by sand and dust collecting chamber and sand and dust collection funnel by connecting hole.

The utility model has the advantages that:

1, simple in structure, easy to operate, practical, cost is low.In sand-flow field, the grains of sand concentrate on overhead 30 centimetres of high scopes in a large number.When the data that will gather husky flux under different wind speed, allow sand and dust collecting chamber front sand inlet be greater than husky mouthful over against the wind erosion sample surfaces, within the regular hour.Husky flux in can obtaining during this period of time.

2, reasonable in design.The face that sand inlet is relative is furnished with nylon wire with holes as exhausr port.Exhausr port with advance husky chamber build-up pressure balance, air-flow is discharged from exhausr port, thereby reduces the gas velocity of husky amount to sand and dust collection funnel upper punch.Under the obstruct of stainless steel mesh, the drift sand natural subsidence is piled up to the sand collecting box bottom, thereby reduce the error of husky flux.

The accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the schematic diagram of Fig. 1 sand and dust collection funnel.

Embodiment

As shown in Figure 1, oneplant wind-tunnel special-purpose soil wind erosion gatherer, by sand and dust collecting chamber 1, sand and dust collection funnel 2, the husky bottle 3 of collection and electronic balance 4, formed, it is characterized in that sand and dust collecting chamber 1 shape is square, sand and dust collection funnel 2 shapes are upper square lower circular funnel, sand and dust collection funnel 2 is installed to blowing sand wind tunnel test section 5 belows, bottom, test section 5 bottoms have two

square holes

6, and 6 tops, place, hole, lower wind direction side are put into sand and dust collecting chamber 1 and embedded on sand and dust collection funnel 2 square tops.Locate the upwind 16 at test section 5 interior holes in 500 millimeters, sand and dust collecting chamber 1 the place ahead and put into the wind erosion sample 7 of fetching in field, 7, wind erosion sample maintains an equal level with test section 5 bottoms, the sample box surrounding is lined with sponge block 15, sand and dust collecting chamber 1 front has sand inlet 8, the back that sand inlet 8 is relative is exhausr port 9, is furnished with nylon screen 10 on exhausr port 9, and the factor of porosity of net is 200 orders, below has on sand and dust passage passway stainless steel mesh 11 is arranged, and the factor of porosity of net is 18 orders.Bolt is fastening by sand and dust collecting chamber 1 and sand and dust collection funnel 2 by connecting hole 14.

In husky test chamber 5 size square opening holes, excavation likeness in form top, 2 end of sand and dust collection funnel, bottom 6, sand and dust collection funnel 2 tops are equal with test section 5 bottom surfaces.The connection hole that collecting chamber 1 is put between test section 5 base plates and sand and dust collection funnel 2 is fixed with bolt.Start from scratch and reach the following period of time of a certain setting value when wind speed, grains of sand take-off on interior middle wind erosion sample 7 bed surfaces of test section 5, the grains of sand of take-off enter sand inlet 8 along horizontal direction, the face that sand inlet 8 is relative is furnished with net with holes as exhausr port 9, has reduced the gas velocity of distinguished and admirable sand to sand and dust collection funnel 2 upper punches.Sand and dust are under the obstruct of nylon screen 10, and the stainless steel mesh 11 that enters bottom forms interior sand and dust collection funnel 2 bottom surfaces of the husky device of drift sand passage inflow collection and enters up big and down small husky passage 12, and the circular funnel of husky passage 12 is equipped with husky flux valve 13 in place.

After in a period of time, test is eroded, the husky bottle 3 of sand and dust collection funnel husky bottle 3 collection of 2 aligned beneath collection is placed on electronic balance 4 to be opened husky flux valve 13 sand and dust of collecting is flowed in the husky bottle 3 of collection, unlocking electronic balance Weighing, from the unit interval enter the husky amount of sand and dust collection funnel 2 the number can calculate husky flux the number.Thereby guarantee the exact value of husky flux under a certain wind speed, for studying dust storm motion characteristics under certain wind friction velocity, provide reliable test condition.

Claims

1. oneplant wind-tunnel special-purpose soil wind erosion gatherer, by sand and dust collecting chamber (1), sand and dust collection funnel (2), the husky bottle of collection (3) and electronic balance (4) form, it is characterized in that sand and dust collecting chamber (1) shape is square, there is connecting hole (14) left and right, bottom, sand and dust collection funnel (2) shape is upper square lower circular funnel, bottom surface is up big and down small husky passage (12), the husky circular funnel of passage (12) place is provided with valve (13), the husky bottle of sand and dust collection funnel (2) aligned beneath collection (3) the husky bottle of collection (3) is placed on the upper sand and dust samples (17) of collecting of electronic balance (4), sand and dust collection funnel (2) is installed to blowing sand wind tunnel test section (5) bottom, test section (5) bottom has two square holes (6), hole, lower wind direction side (6) is located to put into sand and dust collecting chamber (1) and is embedded the square top of sand and dust collection funnels (2), put into the wind erosion sample (7) of fetching in field in upwind (16) hole in sand and dust collecting chamber (1) the place ahead place's test section (5), the fair surrounding of sample (7) face and test section (5) bottom is lined with sponge block (15), sand and dust collecting chamber (1) front has sand inlet (8), the back that sand inlet (8) is relative is exhausr port (9), be furnished with nylon screen (10) on exhausr port (9), the factor of porosity of net is 200 orders, below has on sand and dust passage passway stainless steel mesh (11) is arranged, the factor of porosity of net is 18 orders, bolt is fastening by sand and dust collecting chamber (1) and sand and dust collection funnel (2) by connecting hole (14).