CN212008994U

CN212008994U - Radiation protection cover with heat dissipation wire for meteorological measurement

Info

Publication number: CN212008994U
Application number: CN202020268016.1U
Authority: CN
Inventors: 杨杰; 邓玄; 刘清惓; 陈高颖
Original assignee: Nanjing University of Information Science and Technology
Current assignee: Jiangsu tongjinyuan Technology Co.,Ltd.
Priority date: 2020-03-06
Filing date: 2020-03-06
Publication date: 2020-11-24
Anticipated expiration: 2030-03-06

Abstract

The utility model discloses a radiation shield that meteorological measurement used has heat dissipation silk, include the hemisphere shell reflector that circular flat plane and cambered surface casing are constituteed of placing by the level, flat plane lower surface is equipped with the temperature sensor probe, cambered surface casing's upper surface is equipped with many heat conduction silks. Firstly, the hemispherical shell reflector can effectively reflect solar radiation in a wider solar elevation angle range, and the measurement error of a temperature sensor probe caused by the solar radiation is reduced; secondly, the heat conduction wires can well diffuse the radiant heat of the reflector, reduce the radiation error of the temperature sensor probe, and in addition, the temperature sensed by the temperature sensor probe in the radiation shield can be continuously updated, and the hysteresis error of the temperature sensor probe is reduced.

Description

Radiation protection cover with heat dissipation wire for meteorological measurement

Technical Field

The utility model belongs to the technical field of meteorological instrument technique and specifically relates to a radiation protection cover that meteorological measurement was with having heat dissipation silk is related to.

Background

In the daytime, the solar radiation causes the temperature sensor of the meteorological station to be heated, so that the observed value of the temperature sensor is higher than the air temperature of the surrounding environment, and the error caused by the phenomenon is called solar radiation error. 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 probe, and radiation errors are reduced. However, since the white coating on the outer surface of the louver or radiation shield is difficult to reflect the solar radiation 100%, the conventional louver or radiation shield, especially the blades and the ring plates thereof, still generates a significant radiation temperature rise to a certain extent, which causes the air flow flowing into the interior thereof to be heated, resulting in the observation result of the internal temperature sensor probe being higher than the temperature of the external free 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. Because gaps are formed between the blades of the louver box and the ring piece of the radiation shield, a certain proportion of solar direct radiation, scattered radiation and ground reflected radiation always enter the instrument from the gaps and irradiate the surface of the temperature sensor probe, and the radiation error is further enlarged due to the effect. The radiation error of the traditional louver box and the radiation-proof shield can reach 1 ℃ 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 probe and cause hysteresis errors, and the hysteresis of the wooden louver box can reach more than 10 minutes. In addition, the thermal capacities of the louver box and the radiation-proof cover are large, so that great difficulty is brought to temperature pulsation observation. A good weather station shield design should not only minimize the solar radiation reaching the temperature sensor probe surface, but also maximize the air flow velocity around the temperature sensor probe. The use of vanes or rings helps to meet the first requirement, but it is difficult to meet the second requirement and thus to eliminate the effect of thermal pollution. Therefore, the two design requirements are contradictory, which brings difficulty to the improvement of the performance of the radiation shield.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to overcome the not enough of background art, the utility model discloses a radiation shield that meteorological measurement used has the heat dissipation silk.

The technical scheme is as follows: the utility model discloses a radiation shield that meteorological measurement used has heat dissipation silk, include the hemisphere shell reflector that circular flat tie and cambered surface casing are constituteed of placing by the level, flat tie lower surface is equipped with the temperature sensor probe, cambered surface casing's upper surface is equipped with many heat conduction silks.

Further, the temperature sensor probe is positioned at the center of the flat bottom surface.

Furthermore, the heat conducting wires are uniformly distributed on the upper surface of the cambered surface shell at intervals.

Furthermore, the arrangement angle of the heat conducting wires is perpendicular to the tangent plane of the cambered surface shell, and the heat conducting wires are fixed through heat conducting glue.

Furthermore, the hemispherical shell reflector and the heat conducting wires are made of silver, copper, aluminum or other materials with high heat conductivity. The surfaces of the hemispherical shell reflector and the heat conducting wires are plated with a layer of reflective material, and the reflective material can be silver, nickel, aluminum or other high-reflection materials.

Has the advantages that: compared with the prior art, the utility model has the advantages that: firstly, the hemispherical shell reflector can effectively reflect solar radiation in a wider solar elevation angle range, and the measurement error of a temperature sensor probe caused by the solar radiation is reduced; secondly, the heat conduction wires can well diffuse the radiant heat of the hemispherical shell reflector, reduce the radiation error of the temperature sensor probe, and in addition, can continuously update the temperature sensed by the temperature sensor probe in the radiation shield and reduce the hysteresis error of the temperature sensor probe.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a front view of the present invention;

fig. 3 is a plan view of the present invention.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.

The radiation shield with the heat dissipation wires for the meteorological measurement shown in fig. 1, fig. 2 and fig. 3 comprises a hemispherical reflector composed of a horizontally placed circular flat bottom 101 and a cambered surface shell 102, wherein the lower surface of the flat bottom 101 is provided with a temperature sensor probe 2, and the temperature sensor probe 2 is located at the center of the flat bottom 101. The upper surface of the arc surface shell 102 is provided with a plurality of heat conducting wires 3. The heat conducting wires 3 are uniformly distributed on the upper surface of the cambered surface shell 102 at intervals. The arrangement angle of the heat conducting wires 3 is perpendicular to the tangent plane of the cambered surface shell 102 and is fixed through heat conducting glue.

Even the temperature of the hemispherical shell reflector can be increased by the direct solar radiation, the scattered radiation, the reflected radiation and the heat conduction effect in the daytime, the heat conducting wires 3 arranged above the reflector can also timely dissipate heat, so that the radiant heat is not easily conducted to the position of the temperature sensor probe 2 installed in the center inside the radiation shield. Meanwhile, the design structure of the hemispherical shell can effectively prevent solar radiation from entering the spherical shell, so that radiation pollution can be avoided to a certain extent, and radiation error can be reduced.

The temperature sensor probe 2 is directly communicated with the atmosphere, so that the atmospheric temperature can be sensed in real time, and the hysteresis error of the temperature sensor probe 2 is reduced.

The hemispherical shell reflector and the heat conducting wires 3 are made of silver, copper, aluminum or other materials with high heat conductivity. The surfaces of the hemispherical shell reflector and the heat conducting wires 3 are plated with a layer of reflective material. The reflective material may be silver, nickel, aluminum or other highly reflective material.

Through simulation experiment verification, under the same environmental condition, the utility model discloses can reduce radiation error to 0.1 ℃ of the ranks, and traditional shutter box and natural draft radiation shield's radiation error is up to 1 ℃ of the ranks, and is visible, and the radiation shield that this application relates to has reduced radiation error. Compare with vane type's shutter box and ring piece formula radiation shield, the utility model relates to a radiation shield volume is less, weight is less, reduce cost, and the structure is simple relatively, easily manufacturing, maintenance installation and cleanness.

Claims

1. The utility model provides a meteorological measurement is with protecting against radiation cover that has heat dissipation silk which characterized in that: the hemispherical shell reflector comprises a round flat bottom surface (101) and a cambered surface shell (102), wherein the round flat bottom surface and the cambered surface shell are horizontally placed, a temperature sensor probe (2) is arranged on the lower surface of the flat bottom surface (101), and a plurality of heat conducting wires (3) are arranged on the upper surface of the cambered surface shell (102).

2. The radiation shield with the heat dissipating wire for meteorological measurement according to claim 1, characterized in that: the temperature sensor probe (2) is positioned at the center of a circle of the flat bottom surface (101).

3. The radiation shield with the heat dissipating wire for meteorological measurement according to claim 1, characterized in that: the heat conducting wires (3) are uniformly distributed on the upper surface of the cambered surface shell (102) at intervals.

4. The radiation shield with the heat dissipating wire for meteorological measurement according to claim 1, characterized in that: the arrangement angle of the heat conducting wires (3) is perpendicular to the tangent plane of the cambered surface shell (102) and fixed through heat conducting glue.

5. The radiation shield with the heat dissipating wire for meteorological measurement according to claim 1, characterized in that: the hemispherical shell reflector and the heat conducting wires (3) are made of silver, copper or aluminum.

6. The radiation shield with the heat dissipating wire for meteorological measurement according to claim 5, wherein: the surfaces of the hemispherical shell reflector and the heat conducting wires (3) are plated with a layer of reflective material.

7. The radiation shield with the heat dissipating wire for meteorological measurement according to claim 6, wherein: the reflective material is silver, nickel or aluminum.