CN111256941A - Snow flux measuring device for wind blowing snow movement - Google Patents
Snow flux measuring device for wind blowing snow movement Download PDFInfo
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- CN111256941A CN111256941A CN202010176075.0A CN202010176075A CN111256941A CN 111256941 A CN111256941 A CN 111256941A CN 202010176075 A CN202010176075 A CN 202010176075A CN 111256941 A CN111256941 A CN 111256941A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
- G01M9/065—Measuring arrangements specially adapted for aerodynamic testing dealing with flow
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Abstract
The invention provides a snow flux measuring device for wind-blowing snow movement, which comprises a base and a shell arranged on the base; the front side surface of the shell is an opening surface; a plurality of partition plates are arranged in the shell at intervals from top to bottom, and divide an inner cavity of the shell into a plurality of layers of snow particle collecting cavities; the opening part at the front end of the snow particle collecting cavity is connected with a snow particle leading-in pipeline which extends along the front-back direction, the rear end of the snow particle collecting cavity is connected with an air guide pipeline, and a snow baffle plate and a rectifying plate are also arranged in the snow particle collecting cavity; a plurality of ventilation holes are arranged on the rectifying plate; the top surface of casing still is equipped with the deflector, and the inside heating element that still is equipped with of casing. The snow flux measuring device for the snow blowing movement can collect snow particles at different heights in space into the snow particle collecting cavities at different heights, can ensure that the snow particles are concentrated in the snow particle collecting cavities, and has good collecting efficiency; the snow flux is obtained through conversion by measuring the volume of the molten water, and the measurement precision is high.
Description
Technical Field
The invention belongs to the technical field of snow gauge measuring equipment, and particularly relates to a snow flux measuring device for snow blowing movement.
Background
In cold regions, people's life and production are adversely affected by snow blowing, and among them, visual disturbance caused by the increase in concentration of snow particles in the air due to erosion of ground snow caused by the action of wind is one of the main adverse effects. In the process of blowing snow by wind, the snow concentration of snow particles at different heights in space is obviously different due to the characteristics of the snow particles and the characteristics of the wind, and the snow concentration in the space range is measured directly with certain difficulty. The snow flux is one of important parameters in the research of the wind snow blowing movement, and has important significance for knowing the wind snow blowing movement rule and verifying the accuracy of wind tunnel tests and numerical simulation, so that the accurate measurement of the snow flux in different terrains and different heights is extremely important.
Aiming at a snow flux measuring method, the currently adopted method can be roughly divided into two methods, one method is to obtain the number of snow particles passing through in unit time at different heights through a particle counter and obtain the snow flux at the height through conversion; another method is to collect the snow blowing quality at different heights by a collecting box or a disc so as to obtain the snow flux at the height. Aiming at the first test method, the particle counter is complex to operate, high in cost and not beneficial to large-scale test application; for the second test method, only how to collect the snow mass with different heights by simply staying at present, although some improvements are made, such as increasing a rotating chassis to keep the mass consistent with the wind direction in real time, the snow collecting efficiency is poor, and snow is easy to accumulate in the front of the measuring device, so that the snow flux measuring accuracy is low.
Disclosure of Invention
The invention aims to provide a snow flux measuring device for snow blowing movement, and aims to solve the technical problems that measuring equipment in the prior art is complex in operation or poor in collecting efficiency and measuring accuracy.
In order to achieve the purpose, the invention adopts the technical scheme that: the snow flux measuring device comprises a base and a shell arranged on the base; the front side surface of the shell is an opening surface; a plurality of partition plates are arranged in the shell at intervals from top to bottom, and divide the inner cavity of the shell into a plurality of layers of snow particle collecting cavities;
the snow particle collecting device comprises a snow particle collecting cavity, a snow particle guide pipeline, a wind guide pipeline, a snow baffle plate and a rectifying plate, wherein the front end opening part of the snow particle collecting cavity is connected with the snow particle guide pipeline which extends in the front-back direction, the rear end of the snow particle collecting cavity is connected with the wind guide pipeline, and the snow particle collecting cavity is also internally provided with the snow baffle plate and the rectifying plate; a plurality of ventilation holes are formed in the rectifying plate;
the top surface of casing still is equipped with the deflector, the inside heating element that still is equipped with of casing.
As another embodiment of the present invention, the snow particle introducing pipe includes an inlet section and a guide section; the length of the inlet section is smaller than that of the flow guide section;
the inlet section is a square pipeline; the flow guide section is a square conical pipeline, the small-caliber end of the flow guide section is in smooth transition connection with the inlet section, and the large-caliber end of the flow guide section is in smooth transition connection with the front-end opening part of the snow particle collecting cavity;
the included angles of the inner walls of the inlet section and the flow guide section are all in fillet transition.
As another embodiment of the present invention, the air guiding pipeline extends in an up-down direction, and an upper end of the air guiding pipeline extends out of the top surface of the casing.
As another embodiment of the invention, the lower part of the snow particle collecting cavity is provided with a plurality of snow baffles at intervals from front to back, and the top surfaces of the plurality of snow baffles are sequentially heightened from front to back; the snow blocking plate positioned at the front end is fixed at the front part of the snow particle collecting cavity, and the snow blocking plate positioned at the rear end is fixed at the rear part of the snow particle collecting cavity.
As another embodiment of the present invention, a plurality of the rectifying plates are provided at intervals from front to back on the upper portion of the snow particle collecting chamber, and bottom surfaces of the plurality of the rectifying plates are sequentially lowered from front to back; wherein, be located the front end the cowling panel is fixed in the middle part in snow grain collection chamber is located the rear end the cowling panel is fixed in the rear portion in snow grain collection chamber, and is located the rear end the cowling panel is located the rear of snow board.
As another embodiment of the present invention, the left side surface and/or the right side surface of the housing is made of a transparent material.
As another embodiment of the invention, the bottom of the inner cavity of the shell is also provided with a plurality of water accumulation cavities which are sequentially arranged along the front-back direction, and the inner wall of each water accumulation cavity is provided with scale marks; a water outlet is formed in the shell corresponding to each water accumulation cavity; each snow particle collecting cavity is communicated with one of the water accumulating cavities through a water guide pipe; the water guide pipe is positioned in the shell.
As another embodiment of the invention, a water outlet is arranged at the bottom of the front end of the snow particle collecting cavity, and the bottom of the water outlet is obliquely arranged along the left and right directions of the shell; one end of the water guide pipe is fixed at the water outlet.
As another embodiment of the invention, the heating assembly comprises a storage battery and a plurality of groups of electric heating sheets which are respectively electrically connected with the storage battery; every the intracavity is collected to the snow grain all has laid the electric heat piece, every still laid on the chamber wall in chamber is collected to the snow grain and is located the inboard heat preservation of electric heat piece.
As another embodiment of the present invention, a supporting frame for connecting the housing is disposed on the base, the supporting frame can rotate relative to the base, and the housing can slide in the up-down direction and swing in the front-back direction relative to the supporting frame.
The snow flux measuring device for the snow blowing movement provided by the invention has the beneficial effects that: compared with the prior art, the interior of the shell is divided into a plurality of layers of snow particle collecting cavities by a plurality of partition plates which are arranged at intervals up and down, and the plurality of layers of snow particle collecting cavities can collect the amount of snow particles at different heights of the space; the snow particle leading-in pipeline is arranged at the front end of each snow particle collecting cavity, so that the passing path of the snow particles is prolonged, the vortex generated by the flow of the snow particles is reduced, and the accumulation of the snow particles at the front end of the snow particle collecting cavity can be avoided when the wind speed is low; the rectifying plate has the function of slowing down the flow speed of the snow particles, the snow baffle plate has the function of isolating the snow particles, and the rectifying plate and the snow baffle plate can prevent the snow particles from being directly blown out of the air guide pipeline when the wind speed is high; the heating assembly is used for melting the snow particles into water, the mass of the snow particles can be obtained by measuring the amount of the melted water in each layer of snow particle collecting cavity, and snow fluxes with different heights can be obtained by conversion;
the snow flux measuring device for the snow blowing movement can collect snow particles at different heights in space into the snow particle collecting cavities at different heights within the specified collecting time, so that the subsequent entering of the snow particles is not influenced by accumulation, the snow particles are not directly blown out from the air guide pipeline, the snow particles can be completely concentrated in the snow particle collecting cavities, and the collecting efficiency is good; the snow flux is obtained through conversion by measuring the mass of the snow particles, and the measurement precision is high.
Drawings
Fig. 1 is a first structural schematic diagram (for convenience of observation, the left side wall of the housing is omitted in the figure) of a snow flux measuring device for snow blowing movement provided by an embodiment of the invention;
fig. 2 is a second schematic structural diagram (for convenience of observation, the left side wall of the housing is omitted in the drawing) of the snow flux measuring device for snow blowing movement according to the embodiment of the present invention;
fig. 3 is a third schematic structural diagram of a snow flux measuring device for snow blowing movement according to an embodiment of the present invention.
In the figure: 1. a base; 11. a support frame; 12. a threaded fastener; 2. a housing; 20. a snow particle collection chamber; 21. a partition plate; 22. a snow guard; 23. a rectifying plate; 24. a water accumulation cavity; 25. a water-stop sheet; 26. a water outlet; 27. a water conduit; 28. a water outlet; 3. a snow particle introducing pipeline; 31. an inlet section; 32. a flow guide section; 4. a wind guide pipeline; 5. a guide plate; 61. an electric heating sheet; 62. a heat-insulating layer; 63. and (4) a storage battery.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 3 together, the snow flux measuring device for snow blowing movement provided by the present invention will now be described. The snow flux measuring device for the wind blowing snow movement comprises a base 1 and a shell 2 arranged on the base 1. The front side surface of the shell 2 is an opening surface; a plurality of division plates 21 are arranged in the shell 2 from top to bottom at intervals, and the inner cavity of the shell 2 is divided into a plurality of layers of snow particle collecting cavities 20 by the division plates 21.
Wherein, the front end opening part of the snow particle collecting cavity 20 is connected with a snow particle leading-in pipeline 3 which extends along the front-back direction, the rear end of the snow particle collecting cavity 20 is connected with an air guide pipeline 4, and a snow baffle 22 and a rectifying plate 23 are also arranged in the snow particle collecting cavity 20; the rectifying plate 23 is provided with a plurality of ventilation holes. The top surface of casing 2 still is equipped with deflector 5, and casing 2 is inside still to be equipped with heating element.
The snow flux measuring device for the snow blowing movement provided by the invention has the following use process:
the device is placed at a place to be tested in a wind-blowing snow environment, the opening of the snow particle introducing pipeline 3 faces the windward side, snow particles enter the snow particle collecting cavity 20 through the snow particle introducing pipeline 3, the snow particle amount of different heights in the space can be collected by the multiple layers of the snow particle collecting cavities 20, the path through which the snow particles pass is prolonged by the snow particle introducing pipeline 3, the vortex generated by the flow of the snow particles is reduced, and the snow particles can be prevented from being accumulated at the front end of the snow particle collecting cavity 20 when the wind speed is low; the rectifying plate 23 has the function of slowing down the flow speed of the snow particles, the snow baffle plate 22 has the function of isolating the snow particles, and the rectifying plate 23 and the snow baffle plate 22 can prevent the snow particles from being directly blown out of the air guide pipeline 4 when the wind speed is high.
When the measuring time is up, a plugging plate or a horizontal rotating shell 2 is arranged at the opening of the snow particle leading-in pipeline 3, so that no snow particles enter the snow particle leading-in pipeline 3. The heating assembly is started, the temperature of the inner cavity of the shell 2 is increased, snow particles are melted into water, the snow mass can be obtained by measuring the water melting amount in the snow particle collecting cavities 20 of all layers, and the snow flux in different heights of the space can be obtained by conversion.
It should be noted that the snow flux is obtained by converting the snow mass, and the conversion method is the prior art and is not described herein.
In addition, there are various ways to measure the accumulated water in each layer of the snow particle collecting cavity 20, such as guiding the accumulated water in the snow particle collecting cavity 20 into a measuring vessel, or arranging a water level sensor in the snow particle collecting cavity 20, or directly measuring the depth of the accumulated water by using a measuring ruler, etc. The present embodiment does not specifically limit the measuring method for measuring the water accumulation amount.
Furthermore, the snow particle introducing pipe 3 and the casing 2 are made of super-hydrophobic materials or coated with super-hydrophobic coatings for reducing errors caused by the flow of the molten water.
Compared with the prior art, the snow flux measuring device for the snow blowing movement can collect snow particles at different heights in space into the snow particle collecting cavities 20 at different heights within the specified collecting time, so that the accumulation and influence on the subsequent entering of the snow particles are avoided, the snow particles are not directly blown out from the air guide pipeline 4, the snow particles can be completely concentrated in the snow particle collecting cavities 20, and the collecting efficiency is good; the snow flux is obtained through conversion by measuring the mass of the snow particles, and the measurement precision is high.
Referring to fig. 1, as an embodiment of the snow flux measuring device for snow blowing movement provided by the present invention, the snow particle introducing pipeline 3 includes an inlet section 31 and a flow guiding section 32; the length of the inlet section 31 is less than the length of the flow guide section 32.
Specifically, the casing 2 is of a rectangular structure, and the partition plates 21 are arranged in the casing 2 in an extending manner along a direction perpendicular to the up-down direction, so that the multilayer snow particle collecting cavity 20 partitioned by the partition plates 21 is a rectangular cavity, and the inlet section 31 is a square pipeline; the flow guide section 32 is a square conical pipeline, the small-caliber end of the flow guide section 32 is in smooth transition connection with the inlet section 31, and the large-caliber end of the flow guide section 32 is in smooth transition connection with the front-end opening part of the snow particle collecting cavity 20; the included angles of the inner walls of the inlet section 31 and the flow guide section 32 are all in fillet transition.
The length of the flow guide section 32 is 3-5 times of the length of the inlet section 31, and the sum of the lengths of the flow guide section 32 and the inlet section 31 is slightly smaller than the length of the shell 2 in the front-rear direction, as shown in fig. 1. Because snow grain inlet pipe 3 is rectangular shape structure, has played the effect of guide snow grain flow direction, and snow grain inlet pipe 3 uses with deflector 5 cooperation, can guarantee that the fore-and-aft direction of casing 2 is unanimous with the incoming flow direction in real time in the actual measurement process, need not additionally to use the wind vane check.
Specifically, the inlet section 31 has an inner diameter of 1-2 cm. The cross section of the flow guide section 32 can be any quadrilateral structure, as long as the small-caliber end of the flow guide section 32 smoothly transitions to the large-caliber end, and the flow guide section 32 is of a streamline structure.
The inlet section 31 adopts a square pipe structure, and the flow guide section 32 adopts a square taper pipe structure, so that the generation of fluid vortexes is reduced near the inlet section 31, and then snow particles can enter the snow particle collecting cavity 20 more efficiently.
Referring to fig. 1, as a specific embodiment of the snow flux measuring device for snow blowing movement according to the present invention, the air guiding pipe 4 is extended along the up-down direction, and the upper end of the air guiding pipe 4 extends out of the top surface of the housing 2.
The air ducts 4 are isolated from each other to avoid convection due to the mutual communication. Specifically, the upper end of each air guiding duct 4 extends upward out of the housing 2 by a distance, and the extended end is bent rearward.
Referring to fig. 1 and 2, as an embodiment of the snow flux measuring device for snow blowing exercise according to the present invention, a plurality of snow baffles 22 are disposed at intervals from front to back at the lower portion of the snow particle collecting chamber 20, and the top surfaces of the snow baffles 22 are sequentially raised from front to back; wherein, the snow guard 22 located at the front end is fixed at the front of the snow particle collecting chamber 20, and the snow guard 22 located at the rear end is fixed at the rear of the snow particle collecting chamber 20.
The top surfaces of the snow baffles 22 are sequentially increased from front to back, and the wind drives the snow particles to flow backwards in the snow particle collecting cavity 20, so that on one hand, the snow particles can be gradually reduced in flowing speed by the plurality of snow baffles 22, and on the other hand, the snow particles can be intensively stopped at the middle rear part of the snow particle collecting cavity 20.
A plurality of rectifying plates 23 are arranged at intervals from front to back on the upper part of the snow particle collecting cavity 20, and the bottom surfaces of the rectifying plates 23 are sequentially reduced from front to back; wherein, the fairing 23 that is located the front end is fixed in the middle part of snow grain collection chamber 20, and the fairing 23 that is located the rear end is fixed in the rear portion that snow grain collection chamber 20 is close to the air intake of air duct 4, and the fairing 23 that is located the rear end is located the rear of snowboard 22.
The fairing 23 plays the effect of vortex to the snow grain flow, changes snow grain speed direction, makes the snow grain speed have the weight down, and cooperation snowboard 22 reduces the speed that the snow grain flows to can make the snow grain touch fairing 23 back speed reduce, avoid collecting the in-process and collect chamber 20 jam because of collecting the snow volume great snow that causes through fairing 23 ventilative hole. The plurality of rectifying plates 23 are matched with the plurality of snow blocking plates 22, so that snow particles are intensively stopped at the middle rear part of the snow particle collecting cavity 20, and the blocking phenomenon caused by the accumulation of the collected snow particles at the front end of the snow particle collecting cavity 20 is avoided.
Preferably, the top surface of the snow guard 22 located at the foremost end is slightly protruded upward from the bottom surface of the large diameter of the deflector section 32, and the top surface of the snow guard 22 located at the rearmost end is protruded upward from the bottom surface of the deflector 23 located at the rearmost end.
Specifically, the snow guard 22 is fixed to the lower portion of the sidewall of the snow particle collecting chamber 20 with a gap between the bottom surface of the snow guard 22 and the bottom wall of the snow particle collecting chamber 20 for flowing water. The rectifying plate 23 is fixed to the upper portion of the sidewall of the snow collecting chamber 20. Since the heights of the snow collecting chambers 20 are different, the fixing positions of the rectifying plates 23 are different in the front-rear direction.
In order to facilitate observation of the snow accumulation in the snow particle collecting cavity 20, as a specific implementation mode of the snow flux measuring device for snow blowing movement provided by the invention, the left side surface and/or the right side surface of the shell 2 are/is made of transparent materials, so that the snow change in the snow particle collecting cavity 20 can be observed in real time in the actual measurement process of the device, and the measurement time can be reasonably determined according to the actual measurement environmental conditions on site.
In this embodiment, the transparent sidewall of the housing 2 is integrally rotatably connected to the housing 2, and the transparent sidewall of the housing 2 is equivalent to a door of the housing 2 and can be opened and closed.
Referring to fig. 1 and 2, as a specific embodiment of the snow flux measuring device for snow blowing movement provided by the present invention, the bottom of the inner cavity of the housing 2 is further provided with a plurality of water accumulating cavities 24 sequentially arranged along the front-back direction, and the inner wall of the water accumulating cavity 24 is provided with scale marks; a water outlet 26 is arranged on the shell 2 corresponding to each water collecting cavity 24; each snow particle collecting cavity 20 is respectively communicated with one of the water accumulating cavities 24 through the water guide pipe 27; the water introduction duct 27 is located inside the case 2.
In the embodiment, the water guide pipe 27 is used for guiding the melted accumulated water in the snow particle collecting cavity 20 into the accumulated water cavity 24, and the volume of the accumulated water is obtained by reading the scale marks of the accumulated water cavity 24, so that the mass of the accumulated water is obtained; the mass of the accumulated water in each water accumulation cavity 24 is the mass of the snow particles in each layer of snow particle collection cavity 20, and the snow flux in each layer of snow particle collection cavity 20 can be obtained through conversion.
In this embodiment, except that the snow particle collection chamber 20 and the snow particle introduction pipe 3 are made of a super-hydrophobic material or coated with a super-hydrophobic coating, the water conduit 27 and the water accumulation chamber 24 are also made of a super-hydrophobic material or coated with a super-hydrophobic coating on the inner wall, that is, all the parts of the shell 2 contacting with the snow particles (water) are made of a super-hydrophobic material or coated with a super-hydrophobic coating on the inner wall.
The accumulated water volume is collected and read by the accumulated water cavity 24, and the measuring mode is simple and quick. The water accumulation cavity 24 and the water guide pipe 27 are arranged in the shell 2, so that the device can complete the measurement work of the snow flux at one time and is less interfered by the external environment; the parts of the shell 2 contacting with the snow particles (water) are made of super-hydrophobic materials, so that the error caused by the flow of the molten water is reduced, and the measurement precision is greatly improved.
Specifically, a plurality of partition plates 21 in the casing 2 divide the inner cavity of the casing 2 into a main water accumulation chamber at the bottommost layer and a multi-layer snow particle collecting chamber 20 above the main water accumulation chamber. A plurality of water baffles 25 are arranged in the main water accumulation cavity along the front-back direction, and the main water accumulation cavity is divided into a plurality of water accumulation cavities 24 by the plurality of water baffles 25. In this embodiment, the number of water accumulation chambers 24 is the same as the number of snow particle collection chambers 20.
The volumes of the water accumulating cavities 24 are different, the volume of the water accumulating cavity 24 corresponds to the height layer number of the snow particle collecting cavity 20, and the higher the height of the snow particle collecting cavity 20 is, the smaller the volume of the water accumulating cavity 24 is.
A water outlet 26 is arranged on the shell 2 corresponding to each water accumulation cavity 24, and after the measurement of the volume of accumulated water is finished, accumulated water in the water accumulation cavities 24 flows out from the water outlets 26.
Referring to fig. 1 and 2, on the basis of the above embodiment, a water outlet 28 is arranged at the bottom of the front end of the snow particle collecting cavity 20, and the bottom of the water outlet 28 is obliquely arranged along the left and right direction of the shell 2; one end of the water guide pipe 27 is fixed at the water outlet 28. The water outlet 28 is used for fixing the water conduit 27 on one hand and is convenient for accumulated water to flow into the water conduit 27 along the water outlet 28 on the other hand.
Referring to fig. 1 and 3, as an embodiment of the snow flux measuring device for snow blowing movement, the heating assembly includes a battery 63 and a plurality of groups of electric heating sheets 61 electrically connected to the battery 63; the battery 63 is used for supplying power to the electric heating sheet 61. An electric heating sheet 61 is laid in each snow particle collecting cavity 20, and a heat insulating layer 62 positioned on the inner side of the electric heating sheet 61 is further laid on the cavity wall of each snow particle collecting cavity 20. The on-off switch of each group of electric heating sheets 61 can be arranged on the outer wall of the shell 2, and the electric heating sheets 61 can be controlled to be on or off through a wireless remote controller. The control method for starting and stopping the operation of the electric heating sheet 61 belongs to the prior art, and is not described herein.
All having laid electric heat piece 61 in every snow grain collection chamber 20 for the intensification time of each snow grain collection chamber 20 is roughly the same, can shorten heating time like this, and then can accelerate the measurement process.
The inner side of the electric heating sheet 61 is also provided with a heat insulation layer 62 for keeping the heat of the snow particle collecting cavity 20, avoiding the heat dissipation and further shortening the heating time.
Specifically, the electric heating sheet 61 is provided on the bottom wall of each layer of the snow particle collecting chamber 20. The electric heating plate 61 may be further provided on the right side wall of the snow particle collecting chamber 20 if the left side wall of the casing 2 is transparent, and the electric heating plate 61 may be further provided on the left side wall of the snow particle collecting chamber 20 if the right side wall of the casing 2 is transparent.
Specifically, in addition to the thermal insulation layer 62 laid in the snow particle collection chamber 20, transparent thermal insulation layers are laid on the inner wall of the ponding chamber 24 and the inner wall of the transparent side of the casing 2.
Referring to fig. 1 and 3, as an embodiment of the snow flux measuring device for snow blowing movement according to the present invention, a supporting frame 11 for connecting a housing 2 is disposed on a base 1, the supporting frame 11 can rotate relative to the base 1, and the housing 2 can slide in an up-and-down direction and swing in a front-and-back direction relative to the supporting frame 11.
Specifically, the base 1 is provided with a bearing, the support frame 11 is connected with the bearing, and the bearing is used for driving the support frame 11 to rotate. The support frame 11 is connected with the shell 2 through a threaded fastener 12. By loosening the screw fastener 12, the up-down position and the back-and-forth swinging position of the housing 2 can be adjusted.
The snow flux measuring device for the snow blowing movement provided by the invention has the following use process:
place the device in the wind snow environment place that awaits measuring, make the opening of snow grain inlet pipe 3 towards the windward side, in the snow grain got into snow grain collection chamber 20 through snow grain inlet pipe 3, the multilayer snow grain collection chamber 20 can collect the snow grain volume of the not co-altitude department in space, and the snow grain is concentrated and is gathered at the well rear portion of snow grain collection chamber 20 after passing through snow board 22 and cowling panel 23.
When the measuring time is up, a plugging plate or a horizontal rotating shell 2 is arranged at the opening of the snow particle leading-in pipeline 3, so that no snow particles enter the snow particle leading-in pipeline 3. The heating assembly is started, the temperature of the inner cavity of the shell 2 is raised, the snow particles are melted into water, and after the snow particles are observed to be completely melted, the shell 2 is swung forwards, so that the accumulated water in the snow particle collecting cavity 20 flows into the accumulated water cavity 24 from the water outlet 28 along the water guide pipe 27. After the accumulated water in each layer of snow particle collecting cavity 20 is observed to completely flow into the corresponding accumulated water cavity 24, the shell 2 is righted, the height of the accumulated water in each accumulated water cavity 24 is read, the volume of the accumulated water is obtained, and the mass of the accumulated water is further obtained; the mass of the accumulated water in each water accumulation cavity 24 is the mass of the snow particles in each layer of snow particle collection cavity 20, and the snow flux in each layer of snow particle collection cavity 20 can be obtained through conversion.
After the measurement is completed, the drain port 26 is opened to drain the accumulated water in the water accumulation chamber 24. Then the transparent side wall of the shell 2 is opened, so that the inner cavity of the shell 2 is cooled, and the actual measurement environment temperature is quickly reached.
The snow flux measuring device for snow blowing movement provided by the invention can measure the snow mass of different space heights at one time by arranging the multilayer snow particle collecting cavity 20 and the plurality of water accumulating cavities 24, is simple to operate, practical and economical, reduces the workload of weighing the snow mass layer by layer and the workload of clearing snow after the measurement is finished, and the whole measuring process is carried out in the device, is less interfered by the external environment and has high measuring precision.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The device for measuring the snow flux in the wind blowing movement is characterized by comprising a base and a shell arranged on the base; the front side surface of the shell is an opening surface; a plurality of partition plates are arranged in the shell at intervals from top to bottom, and divide the inner cavity of the shell into a plurality of layers of snow particle collecting cavities;
the snow particle collecting device comprises a snow particle collecting cavity, a snow particle guide pipeline, a wind guide pipeline, a snow baffle plate and a rectifying plate, wherein the front end opening part of the snow particle collecting cavity is connected with the snow particle guide pipeline which extends in the front-back direction, the rear end of the snow particle collecting cavity is connected with the wind guide pipeline, and the snow particle collecting cavity is also internally provided with the snow baffle plate and the rectifying plate; a plurality of ventilation holes are formed in the rectifying plate;
the top surface of casing still is equipped with the deflector, the inside heating element that still is equipped with of casing.
2. The snow flux measuring device for snow blowing movement according to claim 1, wherein said snow particle introducing duct comprises an inlet section and a guide section; the length of the inlet section is smaller than that of the flow guide section;
the inlet section is a square pipeline; the flow guide section is a square conical pipeline, the small-caliber end of the flow guide section is in smooth transition connection with the inlet section, and the large-caliber end of the flow guide section is in smooth transition connection with the front-end opening part of the snow particle collecting cavity;
the included angles of the inner walls of the inlet section and the flow guide section are all in fillet transition.
3. The snow flux measuring device according to claim 1, wherein the air guide duct extends in an up-down direction, and an upper end of the air guide duct extends out of a top surface of the housing.
4. The snow flux measuring device for snow blowing sports according to claim 1, wherein a plurality of said snow baffles are provided at intervals from front to back in the lower part of said snow particle collecting chamber, and the top surfaces of said plurality of said snow baffles are sequentially raised from front to back; the snow blocking plate positioned at the front end is fixed at the front part of the snow particle collecting cavity, and the snow blocking plate positioned at the rear end is fixed at the rear part of the snow particle collecting cavity.
5. The snow flux measuring device for snow blowing sports according to claim 4, wherein a plurality of said flow straightening plates are provided at intervals from front to back on the upper part of said snow particle collecting chamber, and the bottom surfaces of said plurality of flow straightening plates are sequentially lowered from front to back; wherein, be located the front end the cowling panel is fixed in the middle part in snow grain collection chamber is located the rear end the cowling panel is fixed in the rear portion in snow grain collection chamber, and is located the rear end the cowling panel is located the rear of snow board.
6. A snow flux measuring device according to any one of claims 1 to 5, wherein the housing is made of a transparent material on the left and/or right side.
7. A snow flux measuring device in snow blowing movement according to claim 6, wherein the bottom of the inner cavity of the shell is further provided with a plurality of water collecting cavities which are sequentially arranged in the front-back direction, and the inner wall of each water collecting cavity is provided with scale marks; a water outlet is formed in the shell corresponding to each water accumulation cavity; each snow particle collecting cavity is communicated with one of the water accumulating cavities through a water guide pipe; the water guide pipe is positioned in the shell.
8. The snow flux measuring device for wind-blowing snow movement according to claim 7, wherein a water outlet is provided at the bottom of the front end of the snow particle collecting chamber, and the bottom wall of the water outlet is inclined in the left-right direction of the housing; one end of the water guide pipe is fixed at the water outlet.
9. The snow flux measuring device for wind-blowing sports snow according to claim 1, wherein said heating assembly comprises a storage battery and a plurality of groups of electric heating strips electrically connected to said storage battery, respectively; every the intracavity is collected to the snow grain all has laid the electric heat piece, every still laid on the chamber wall in chamber is collected to the snow grain and is located the inboard heat preservation of electric heat piece.
10. A snow flux measuring device according to any one of claims 1 to 5 and 7 to 9, wherein a support frame for connecting said housing is provided on said base, said support frame being rotatable with respect to said base, said housing being slidable in an up-down direction and swingable in a front-back direction with respect to said support frame.
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| CN111256941B (en) | 2021-10-01 |
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