CN211402793U - Radiation protection cover for temperature sensor of meteorological station - Google Patents
Radiation protection cover for temperature sensor of meteorological station Download PDFInfo
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- CN211402793U CN211402793U CN202020267050.7U CN202020267050U CN211402793U CN 211402793 U CN211402793 U CN 211402793U CN 202020267050 U CN202020267050 U CN 202020267050U CN 211402793 U CN211402793 U CN 211402793U
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- guide plate
- ring piece
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Abstract
The utility model discloses a radiation shield for meteorological station temperature sensor, including first guide plate and the second guide plate that sets up below first guide plate, first guide plate and second guide plate are the round platform structure that the level was placed, big end down, and are the open hollow structure of lower bottom, still include the water conservancy diversion ring piece, the water conservancy diversion ring piece is big end down and the upper and lower bottom surface all open hollow round platform structure, the lower bottom edge of water conservancy diversion ring piece coincides with the lower bottom edge of first guide plate and splices; the first guide plate and the second guide plate are connected through a heat insulation column, and a temperature sensor probe is arranged at the upper bottom of the second guide plate. Firstly, the design enlarges the side surface of the area of the air inlet to form an air gathering inclined surface, can guide horizontal air flow higher than the guide ring piece to enter, enables the measured temperature to have good timeliness, increases the ventilation volume, thereby reducing the lag error, enabling the structure to have relatively good ventilation environment and reducing the radiation error.
Description
Technical Field
The utility model belongs to the technical field of meteorological instrument technique and specifically relates to a radiation protection cover for meteorological station temperature sensor is related to.
Background
In the air temperature observation, the heat is exchanged between the temperature sensing element and the air in a heat conduction manner to establish heat balance. Since the air has little capacity for absorbing radiant energy, especially short-wave radiant energy, the direct solar radiation and the ground reflected radiation can affect the accuracy of the temperature measurement of the sensor under natural conditions. In the process of measuring the temperature by using the temperature sensor in the meteorological station, the temperature of the temperature sensor in the meteorological station is raised by solar radiation in the daytime, so that the measured value of the temperature sensor is higher than the air temperature of the surrounding environment, and the error caused by the phenomenon is called as solar radiation error. At present, a conventional louver box or a natural ventilation radiation-proof cover is adopted in a meteorological station, so that direct irradiation of solar radiation to a temperature sensor can be avoided, 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 temperature sensor based on the traditional louver box and the radiation-proof cover 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, there is a conflict between the above two design requirements, which makes it difficult to improve the performance of the temperature sensor.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: in order to overcome the not enough of background art, the utility model discloses an improve radiation protection cover that is used for meteorological station temperature sensor of temperature measurement accuracy.
The technical scheme is as follows: the utility model discloses a radiation shield for meteorological station temperature sensor, including first guide plate and the second guide plate of setting in first guide plate below, first guide plate and second guide plate are the round platform structure that the level was placed, big end down, and are the open hollow structure of lower bottom, still include the water conservancy diversion ring piece, the water conservancy diversion ring piece is big end down and the upper and lower bottom surface all open hollow round platform structure, water conservancy diversion ring piece lower limb is coincided with the lower base edge of first guide plate and is spliced, the side of second guide plate and the side of water conservancy diversion ring piece form and gather wind inclined plane;
the first guide plate and the second guide plate are connected through a heat insulation column, and a temperature sensor probe is arranged at the upper bottom of the second guide plate.
Furthermore, the lower bottom of the first guide plate and the upper bottom of the second guide plate are positioned on the same plane.
Furthermore, the included angle of a bus connected with the first guide plate and the guide ring sheet is 60-150 degrees
Further, the open angle of the second guide plate is larger than that of the first guide plate.
Furthermore, the diameter of the lower bottom of the second guide plate is equal to that of the upper bottom of the guide ring plate, and the height of the guide ring plate is equal to that of the first guide plate.
Furthermore, the heat insulation columns are provided with 3 heat insulation columns which are respectively vertical to the upper bottoms of the first guide plate and the second guide plate and are uniformly distributed at intervals in the circumference.
Has the advantages that: compared with the prior art, the utility model has the advantages that: firstly, the design enlarges the side surface of the area of the air inlet to form an air gathering inclined surface, can guide horizontal air flow higher than the guide ring piece to enter, enables the measured temperature to have good timeliness, increases the ventilation volume, thereby reducing the lag error, enabling the structure to have relatively good ventilation environment and reducing the radiation error; secondly, the inside passageway that forms the cross section for circular of radiation shield, sets up the temperature sensor probe in the passageway simultaneously, and the temperature sensor probe of central point especially in the passageway receives the radiation heat pollution influence less.
Drawings
Fig. 1 is a schematic perspective view of the present invention;
fig. 2 is a front 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 protection cover for the temperature sensor of the meteorological station as shown in fig. 1 and fig. 2 comprises a first guide plate 1 and a second guide plate 2 arranged below the first guide plate 1, wherein the first guide plate 1 and the second guide plate 2 are both horizontally arranged round platform structures with small top and large bottom and are both hollow structures with open bottoms, and the bottoms of the first guide plate 1 and the second guide plate 2 are positioned on the same plane. The open angle of the second guide plate 2 is larger than that of the first guide plate 1.
The guide ring piece 3 is of a hollow circular truncated cone structure with a large upper part and a small lower part, the upper bottom surface and the lower bottom surface of the guide ring piece 3 are open, the lower bottom edge of the guide ring piece 3 is overlapped and spliced with the lower bottom edge of the first guide plate 1, and the included angle of a bus connected with the first guide plate 1 and the guide ring piece 3 is 60-150 degrees. The diameter of the lower bottom of the second guide plate 2 is equal to that of the upper bottom of the guide ring piece 3, and the height of the guide ring piece 3 is higher than that of the first guide plate 1. The side surface of the second guide plate 2 and the side surface of the guide ring piece 3 form a wind gathering inclined plane; the structure of the wind gathering inclined plane increases the area of an air inlet, can guide horizontal airflow higher than the first guide plate 1 to enter, enables measured temperature to have good timeliness, increases ventilation volume, reduces lag error, enables the structure to have relatively good ventilation environment, and reduces radiation error.
Through simulation experiment verification, under the same environmental condition, the utility model discloses can reduce temperature sensor's radiation error to 0.05 degree of a grade, and the temperature sensor's based on traditional shutter box and natural draft radiation protection cover radiation error is up to 1 degree of a grade, and is visible, and the radiation protection cover that this application relates to has reduced its inside temperature sensor's radiation error. Compare with blade type shutter box and ring piece formula radiation shield, the utility model relates to a radiation shield volume is less, weight is less, and the structure is simple relatively, easily manufacturing, maintenance installation and cleanness, and the design of guide plate makes the intake bigger, and radiation shield's reliability is high.
Claims (6)
1. The utility model provides a protect against radiation cover for weather station temperature sensor which characterized in that: the guide ring piece is characterized by comprising a first guide plate (1), a second guide plate (2) arranged below the first guide plate (1), a guide ring piece (3), a guide ring piece and a wind gathering inclined plane, wherein the first guide plate (1) and the second guide plate (2) are both horizontally arranged round platform structures with small top and large bottom, and are both hollow structures with open lower bottoms, the guide ring piece (3) is a hollow round platform structure with large top and small bottom, the upper bottom surface and the lower bottom surface of the guide ring piece (3) are both open, the lower bottom edge of the guide ring piece (3) is overlapped and spliced with the lower bottom edge of the first guide plate (1), and the side surface of the second guide plate (2) and the side surface of the guide ring piece (3) form;
the first guide plate (1) is connected with the second guide plate (2) through a heat insulation column (4), and a temperature sensor probe (5) is arranged at the upper bottom of the second guide plate (2).
2. The shield for a weather station temperature sensor of claim 1, further comprising: the lower bottom of the first guide plate (1) and the upper bottom of the second guide plate (2) are positioned on the same plane.
3. The shield for a weather station temperature sensor of claim 1, further comprising: the included angle of a bus connected with the first guide plate (1) and the guide ring piece (3) is 60-150 degrees.
4. The shield for a weather station temperature sensor of claim 1, further comprising: the opening angle of the second guide plate (2) is larger than that of the first guide plate (1).
5. The shield for a weather station temperature sensor of claim 1, further comprising: the diameter of the lower bottom of the second guide plate (2) is equal to that of the upper bottom of the guide ring piece (3), and the height of the guide ring piece (3) is equal to that of the first guide plate (1).
6. The shield for a weather station temperature sensor of claim 1, further comprising: the heat insulation columns (4) are provided with 3 heat insulation columns which are respectively vertical to the upper bottoms of the first guide plate (1) and the second guide plate (2) and are uniformly distributed at intervals in the circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020267050.7U CN211402793U (en) | 2020-03-06 | 2020-03-06 | Radiation protection cover for temperature sensor of meteorological station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020267050.7U CN211402793U (en) | 2020-03-06 | 2020-03-06 | Radiation protection cover for temperature sensor of meteorological station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211402793U true CN211402793U (en) | 2020-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020267050.7U Active CN211402793U (en) | 2020-03-06 | 2020-03-06 | Radiation protection cover for temperature sensor of meteorological station |
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| Country | Link |
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| CN (1) | CN211402793U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112945406A (en) * | 2021-03-29 | 2021-06-11 | 南京信息工程大学 | Low radiation error temperature sensing device |
-
2020
- 2020-03-06 CN CN202020267050.7U patent/CN211402793U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112945406A (en) * | 2021-03-29 | 2021-06-11 | 南京信息工程大学 | Low radiation error temperature sensing device |
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| TR01 | Transfer of patent right |
Effective date of registration: 20210326 Address after: 211800 no.22-30, Dangui Road, Pukou District, Nanjing City, Jiangsu Province Patentee after: Jiangsu tongjinyuan Technology Co.,Ltd. Address before: 210044 No. 219 Ning six road, Jiangbei new district, Nanjing, Jiangsu Patentee before: NANJING University OF INFORMATION SCIENCE & TECHNOLOGY |