CN216434410U

CN216434410U - Spiral ground is radiation protection cover for meteorological measurement

Info

Publication number: CN216434410U
Application number: CN202122971116.8U
Authority: CN
Inventors: 王帅; 陈慧君
Original assignee: Nanjing University of Information Science and Technology
Current assignee: Nanjing University of Information Science and Technology
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-05-03
Anticipated expiration: 2031-11-30

Abstract

The utility model provides a spiral ground is radiation shield for meteorological measurement, it includes reflector panel, reflector, heat insulation post and temperature sensor, the lower extreme setting of heat insulation post is in on the reflector panel, its upper end is connected with the reflector, and the heliciform cavity cover body that the reflector constitutes for stacking through the blade is its inside temperature sensor that sets up, leave the clearance between the blade. The radiation-proof shield consists of an upper reflector, a lower reflector and a spiral reflector, the temperature sensor is arranged in the middle of the radiation-proof shield, and the peripheral spiral blades and the reflectors can effectively block direct solar radiation, underlay surface reflected radiation, underlay surface long-wave radiation, scattered radiation and the like, so that radiation errors are reduced; meanwhile, the spiral blade can effectively guide and increase the speed of airflow around the temperature sensor, and radiation errors are further reduced.

Description

Spiral ground is radiation protection cover for meteorological measurement

Technical Field

The utility model relates to a spiral ground is radiation protection cover for meteorological measurement belongs to meteorological instrument's technical field.

Background

In the process of measuring the air temperature by the weather station temperature sensor, the temperature of the temperature sensor is raised by solar radiation in the daytime and is higher than the air temperature of the surrounding environment, and errors caused by the phenomenon are called solar radiation errors. At present, a louver box or a natural ventilation radiation-proof cover for a meteorological station can avoid direct radiation of the sun to a temperature sensor, and radiation errors are reduced. Because the surface of a white coating or other vane material cannot achieve 100% reflectivity, to the extent that conventional louvres and radiation shields, particularly the vanes and rings thereof, still produce significant radiant heating, resulting in the flow of air into the interior being heated, causing the temperature sensor to measure a temperature higher than the temperature of the free outside air. In addition, the blades and the ring plate are not favorable for air flow circulation, and the radiation error is further increased due to low air flow speed inside the louver box or the radiation shield. It is generally believed that a reduction in the air flow velocity inside the shield is accompanied by a thermal pollution effect. The radiation error of the louver box and the radiation-proof cover can reach 1 degree of C or even higher. The blades of the louver box and the ring blades of the radiation-proof cover not only cause the problem of radiation errors, but also reduce the response speed of the temperature sensor and cause hysteresis errors, and the hysteresis of the wooden louver box can reach more than 10 minutes. In accordance with conventional wisdom, a good radiation shield design should not only minimize the radiation reaching the temperature sensor surface, but also maximize the airflow velocity around the temperature sensor. The adoption of the blades or the ring pieces is helpful for meeting the first requirement, but is difficult to meet the second requirement, so that the heat pollution effect is difficult to eliminate, and the contradiction exists between the two design requirements, which brings difficulty to the improvement of the performance of the radiation shield.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model aims to provide a spiral ground is radiation protection cover for meteorological measurement. The radiation-proof shield consists of an upper reflector, a lower reflector and a spiral reflector, the temperature sensor is arranged in the middle of the radiation-proof shield, and the peripheral spiral blades and the reflectors can effectively block direct solar radiation, underlay surface reflected radiation, underlay surface long-wave radiation, scattered radiation and the like, so that radiation errors are reduced; meanwhile, the spiral blade can effectively guide and increase the speed of the air flow around the temperature sensor, and the radiation error is further reduced.

In order to solve the technical problem, the utility model provides a following technical scheme a spiral ground is radiation shield for meteorological measurement, it includes reflector panel, reflector, heat insulation post and temperature sensor, the lower extreme setting of heat insulation post is in on the reflector panel, its upper end is connected with the reflector, and the heliciform cavity cover body that the reflector constitutes for stacking through the blade is its inside temperature sensor that sets up, leave the clearance between the blade.

Preferably, the reflector comprises an upper reflector and a lower reflector, and two ends of the heat-insulating column are respectively connected to the centers of the upper reflector and the lower reflector.

Preferably, the number of the heat insulation columns is 2, the outer ends of the heat insulation columns are respectively connected with the centers of the upper reflector and the lower reflector, and the inner ends of the heat insulation columns are respectively connected with the reflectors.

Preferably, the reflector material is selected from silver, copper and aluminum.

Preferably, the reflector is of a spiral airtight structure which spirally rises from bottom to top.

Preferably, the inner wall of the reflector is coated with a black absorbing layer.

The utility model has the advantages that:

the utility model discloses the radiation shield four sides is penetrating, through will go up reflector panel 1, lower reflector panel 2 and arrange the upper and lower both sides of device in, can be on the basis of guaranteeing the air permeability, the effectual solar direct radiation and the ground reflection that blocks the upper and lower both sides. The spiral structure of the reflector 3 can effectively prevent the influence of various radiations on the temperature sensor 5, and in the interior of the reflector, the inner wall of the reflector is smooth and coated with a black absorbing layer, so that the radiation error caused by secondary radiation can be effectively reduced. The temperature sensor array 5 is arranged at the center of the reflector 3, air flow can flow in from any angle, the flow direction of air is spiral direction, natural wind can be effectively guided to circulate in the radiation shield, the speed of air flow around the temperature sensor array 5 can be effectively accelerated, and radiation error is further reduced.

Drawings

FIG. 1 is a front view of the radiation shield of the present invention;

FIG. 2 is a left side view of the radiation shield of the present invention;

FIG. 3 is a top view of the radiation shield of the present invention;

10-reflector, 1-upper reflector, 2-lower reflector, 3-reflector, 4-heat-insulating column and 5-temperature sensor.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying the present invention are described in detail below with reference to the accompanying drawings.

Example 1

As in fig. 1, 2 the utility model discloses a radiation protection device sketch map, radiation protection cover are three layer construction, and the middle part is the reflector 3 that is the spiral unsealed construction, can guide the inside that the air current got into the radiation cover from the outside, increases the air velocity around the temperature sensor, can effectually block solar radiation and can effectually guarantee the air permeability in its device. Specifically, the radiation protection device comprises a reflector 10, a reflector 3, a heat insulation column 4 and a temperature sensor 5, wherein the lower end of the heat insulation column 4 is arranged on the reflector 10, the upper end of the heat insulation column is connected with the reflector 3, the reflector 3 is a spiral hollow cover body formed by spirally extending and overlapping blades, the temperature sensor 5 is arranged in the spiral hollow cover body, and gaps are reserved among the blades.

Further, this radiation protection device includes reflector panel 1, reflector panel 2, reflector 3 and heat insulating column 4 down, connects heat insulating column 4 between reflector panel 1, lower reflector panel 2, and heat insulating column 4's setting mode is for equidistant or the setting of uniform height. 2 heat insulation columns 4 are arranged, and the outer ends of the heat insulation columns are respectively connected with the centers of the upper reflector 1 and the lower reflector 2, so that the radiation temperature rise caused by direct radiation of the sun above can be effectively reduced, and the heat conduction between the upper reflector 1 and the lower reflector 2 can be reduced; the inner ends of the heat insulation columns 4 are respectively connected with the upper end and the lower end of the reflector 3 through the slots, the reflector 3 is formed by overlapping spiral blades, and the temperature sensors 5 which are positioned inside are difficult to directly irradiate by solar direct radiation, underlay surface radiation, long-wave radiation, scattered radiation and the like. Temperature sensor 5's setting is fixed through conventional means can, for example, use the screw in area aperture to fix at its bottom center, temperature sensor 5 is located the center department of radiation shield, the setting of accessible bracing piece, like this, when the air current flows in, form the air current that has the reflector guide all around, gas around temperature sensor 5 constantly flows all around, can avoid the thermal pollution effect that the ventilation duct wall arouses to a certain extent, also be favorable to reducing the radiation error. Preferably, the upper reflector 1 and the lower reflector 2 are made of metal with high reflectivity, so that not only is the mechanical performance improved, but also the radiation influence is reduced, and the temperature of the airflow entering the device is not too high due to radiation, thereby generating a thermal pollution effect. Preferably, the upper reflector 1 and the lower reflector 2 are made of silver, copper, aluminum or other high-reflectivity materials, the surface of the reflector 3 can be coated with aluminum foil and other materials to enhance the light-reflecting capacity thereof, and the heat-insulating column 4 is made of low-conductivity thermal coefficient materials. Preferably, the surface of the reflector 3 is of a spiral airtight structure, and rises spirally from bottom to top, and the inner wall of the reflector is coated with a black absorbing layer, so that the airflow in the reflector can be conducted and the radiant heat can be diffused.

Under any wind direction angle condition, the airflow can be always guided by the spiral blade gap of the reflector 3, enters the interior of the device in a streamline mode, and then has relatively high wind speed when reaching the surface of the temperature sensor 5, so that the radiation-induced error is reduced.

Through the emulation verification, under the same environmental condition, the utility model relates to a spiral ground is radiation protection cover for meteorological measurement can reduce temperature sensor radiation error to 0.1 ℃ of the ranks, and the radiation error of traditional shutter box and natural draft radiation protection cover is up to 1 ℃ of the ranks, and is visible, and the radiation protection device that this application relates to has reduced temperature sensor's radiation error. Compare with traditional blade type shutter box and ring piece formula radiation shield, the utility model relates to a radiation shield adopts spirally, and the volume is less, weight is lighter, reduce cost, and the structure is simple relatively, easily manufacturing, maintenance installation and cleanness, and under the condition that satisfies radiation protection, ventilation performance is better, and it is obvious to reduce the radiation error effect.

It should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or substituted by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. The utility model provides a spiral ground is radiation protection cover for meteorological measurement which characterized in that: including reflector (10), reflector (3), heat insulation post (4) and temperature sensor (5), the one end setting of heat insulation post (4) is in on reflector (10), the other end with reflector (3) are connected, the heliciform cavity cover body that reflector (3) constitute for the blade stack, leave the clearance between the blade, the inside of reflector (3) sets up temperature sensor (5).

2. The spiral ground radiation shield for meteorological measurement of claim 1, wherein: the reflector (10) comprises an upper reflector (1) and a lower reflector (2), the reflector (3) is arranged between the upper reflector (1) and the lower reflector (2), and the two ends of the heat-insulating column (4) are respectively connected to the centers of the upper reflector (1) and the lower reflector (2).

3. The spiral ground radiation shield for meteorological measurement of claim 2, wherein: the number of the heat insulation columns (4) is 2, one end of each heat insulation column is connected with the centers of the upper reflector (1) and the lower reflector (2), and the other end of each heat insulation column is connected with the reflector (3).

4. The spiral ground meteorological measurement radiation shield as claimed in any one of claims 1 to 3, wherein: the material of the reflector (10) is selected from silver, copper or aluminum.

5. The spiral ground meteorological measurement radiation shield as claimed in any one of claims 1 to 3, wherein: the reflecting shade (3) is of a non-closed spiral structure which spirally rises from bottom to top.

6. The spiral ground radiation shield for meteorological measurement of claim 5, wherein: the inner wall of the reflector (3) is coated with a black material absorption layer.