CN114894341A

CN114894341A - Atmospheric temperature measuring device

Info

Publication number: CN114894341A
Application number: CN202210462829.8A
Authority: CN
Inventors: 杨杰; 傅子睿; 恽雨涵; 刘清惓; 谭梦晴; 朱化难; 葛祥建
Original assignee: Nanjing University of Information Science and Technology
Current assignee: Nanjing University of Information Science and Technology
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2022-08-12

Abstract

The invention discloses an atmospheric temperature measuring device which comprises a first light screen, a second light screen, an outer flow guide disc, an inner flow guide disc, a flow guide body, a temperature sensor probe, a heat insulation support rod, a first heat insulation fixing rod, a second heat insulation fixing rod and a third heat insulation fixing rod, wherein the first heat insulation fixing rod and the second heat insulation fixing rod are symmetrically arranged between the first light screen and the second light screen, and the outer flow guide disc, the inner flow guide disc and the flow guide body are sequentially arranged on the first heat insulation fixing rod and the second heat insulation fixing rod from top to bottom. The shading plates are respectively arranged above and at the bottom of the temperature measuring device, so that direct solar radiation from the upper part and reflected solar radiation from the underlying surface are effectively reduced, and thermal pollution is reduced.

Description

Atmospheric temperature measuring device

Technical Field

The invention relates to the technical field of atmospheric temperature measurement, in particular to an atmospheric temperature measuring device.

Background

During the measurement of the atmospheric temperature, the solar radiation causes the temperature of the sensor to rise during the day, which is higher than the air temperature of the surrounding environment, and the error caused by the phenomenon is called solar radiation error. At present, the direct radiation of the sun to the sensor probe can be avoided by using a louver box or a radiation-proof cover for a meteorological station, and the radiation error is reduced. Because the louver blade and the radiation shield ring blade are not beneficial to airflow circulation, the radiation error is increased due to the low airflow speed in the louver or the radiation shield. In addition, because gaps exist between the blades of the louver and the ring blades of the radiation-proof cover, a certain proportion of direct solar radiation, scattered radiation and ground reflected radiation always enter the instrument from the gaps and irradiate the surface of the probe of the temperature sensor, and the radiation error is further enlarged due to the effect. The radiation error of the louver box and the radiation-proof shield can reach 1 degree of temperature 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. The radiation shield adopting the louver or the ring blade of the blade helps to block solar radiation, but also obstructs air circulation, which brings difficulty to the improvement of the performance of the louver or the radiation shield.

Disclosure of Invention

In order to solve the above mentioned drawbacks in the background art, the present invention provides an atmospheric temperature measuring device, which comprises a double-layer flow guiding plate, wherein the central opening of the flow guiding plate faces downward and is directed to a temperature sensor probe, so that the atmospheric temperature measuring device has a certain flow guiding effect and can prevent solar radiation from directly irradiating the internal temperature sensor probe. The shading plates are respectively arranged above and at the bottom of the temperature measuring device, so that direct solar radiation from the upper part and reflected solar radiation from the underlying surface are effectively reduced, and thermal pollution is reduced.

The purpose of the invention can be realized by the following technical scheme:

the utility model provides an atmospheric temperature measuring device, includes first light screen, second light screen, outer flow guide disc, interior flow guide disc, baffle, temperature sensor probe, thermal-insulated bracing piece, first thermal-insulated dead lever, the thermal-insulated dead lever of second and the thermal-insulated dead lever of third, first thermal-insulated dead lever and the thermal-insulated dead lever symmetry of second are installed between first light screen and second light screen, outer flow guide disc, interior flow guide disc and baffle from the top down install in proper order on first thermal-insulated dead lever and the thermal-insulated dead lever of second, the bottom and the second light screen fixed connection of the thermal-insulated dead lever of third, the one end that the second light screen was kept away from to the thermal-insulated dead lever of third runs through the baffle and extends to the inside of baffle, the temperature sensor probe is installed in the thermal-insulated dead lever of third and is located the baffle inside and serves.

As a preferred scheme of the invention, the circular arc-shaped openings at the centers of the inner and outer flow guide discs are downward directed to the temperature sensor probe, so that the air flow can be guided to flow to the temperature sensor probe, the circular arc-shaped opening at the upper end of the flow guide body is directed to the temperature sensor probe, so that the flow guide effect is further enhanced, the lower end of the flow guide body is provided with the vent slit, the exchange of the inner air and the outer air is facilitated, and the accuracy and the real-time performance of temperature measurement can be ensured.

As a preferable scheme of the present invention, the inner surfaces of the outer baffle, the inner baffle and the baffle are smooth and coated with a high-absorptivity black coating, and the outer surface of the baffle is provided with a high-reflectivity coating for reducing the influence of secondary reflection on the probe of the internal temperature sensor.

As a preferable scheme of the present invention, the first light shielding plate and the second light shielding plate are made of metal, a high absorption rate coating is disposed on a surface of a side of the first light shielding plate and the second light shielding plate close to each other, and an aluminum film is disposed on a surface of a side of the first light shielding plate and the second light shielding plate away from each other to improve reflectivity.

As a preferable scheme of the present invention, the first insulating fixing rod and the second insulating fixing rod are made of plastic with a low heat transfer coefficient, so that thermal pollution can be effectively reduced.

The invention has the beneficial effects that:

1. the inner and outer flow guide discs of the invention have downward central circular arc openings and point to the temperature sensor probe, thus being beneficial to guiding airflow to the temperature sensor probe. The circular opening at the upper end of the flow guide body also points to the temperature sensor probe, so that the flow guide effect is further improved, and the lower end of the flow guide body is provided with a vent seam, so that the exchange of internal air and external air is facilitated, and the accuracy and the real-time performance of temperature measurement can be guaranteed;

2. the invention is provided with the shading plate, can effectively prevent the direct irradiation of the sun to the device, and reduces the radiation error of the probe of the internal temperature sensor. Meanwhile, the sunlight with low angles in the morning and evening can be effectively prevented from being irradiated into the device, and the rainwater, accumulated snow, leaves, dust and other sediments can be effectively prevented from entering the device. The shading plate is arranged at the bottom of the device, so that reflected radiation from the underlying surface can be prevented, and the problem of secondary radiation pollution of the temperature sensor probe is relieved.

Drawings

The invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a top view of the present invention;

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

In the figure:

1. a first light shielding plate; 2. a second light shielding plate; 3. an outer flow guiding disc; 4. an inner flow guiding disc; 5. a flow conductor; 6. a temperature sensor probe; 7. a first heat-insulating fixing rod; 8. a second heat-insulating fixing rod; 9. and the third heat insulation fixing rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

As shown in fig. 1-3, an atmospheric temperature measuring device includes a first light shielding plate 1, a second light shielding plate 2, an outer baffle plate 3, an inner baffle plate 4, and a baffle 5, temperature sensor probe 6, thermal-insulated bracing piece, first thermal-insulated dead lever 7, thermal-insulated dead lever 8 of second and the thermal-insulated dead lever 9 of third, first thermal-insulated dead lever 7 and the thermal-insulated dead lever 8 symmetry of second are installed between first light screen 1 and second light screen 2, outer guiding disk 3, interior guiding disk 4 and baffle 5 from the top down install in proper order on first thermal-insulated dead lever 7 and the thermal-insulated dead lever 8 of second, the bottom and the 2 fixed connection of second light screen of the thermal-insulated dead lever 9 of third, the one end that second light screen 2 was kept away from to the thermal-insulated dead lever 9 of third runs through baffle 5 and extends to the inside of baffle 5, temperature sensor probe 6 is installed in the thermal-insulated dead lever 9 of third and is located baffle 5 inside one and serves.

As a preferred scheme of the present invention, the arc-shaped openings at the centers of the inner and outer

flow guide discs

3 and 4 are directed downward toward the temperature sensor probe 6, which is favorable for guiding the air flow to flow toward the temperature sensor probe 6, the arc-shaped opening at the upper end of the flow guide body 5 is directed toward the temperature sensor probe 6 for further increasing the flow guide effect, and the lower end of the flow guide body 5 is provided with a vent slit, which is favorable for the exchange of the inner air and the outer air, and can ensure the accuracy and the real-time performance of temperature measurement.

As a preferable scheme of the present invention, the inner surfaces of the outer baffle disc 3, the inner baffle disc 4 and the baffle body 5 are smooth and coated with a high-absorptivity black coating, and the outer surface of the baffle body 5 is provided with a high-reflectivity coating for reducing the influence of secondary reflection on the internal temperature sensor probe 6.

As a preferable scheme of the invention, the first shading plate 1 and the second shading plate 2 are made of metal, a high-absorptivity coating is arranged on the surface of one side, close to each other, of the first shading plate 1 and the second shading plate 2, and an aluminum film is arranged on the surface of one side, far away from each other, of the first shading plate 1 and the second shading plate 2, so that the reflectivity is improved.

As a preferable scheme of the present invention, the first insulating fixing rod 7 and the second insulating fixing rod 8 are made of plastic with a low heat transfer coefficient, which can effectively reduce thermal pollution.

Experiments prove that under the same environmental conditions, the radiation error can be reduced to 0.05 ℃ magnitude, while the radiation error of the traditional instrument is up to 1 ℃, so that the radiation error is reduced by the atmospheric temperature measuring device. Compared with the traditional blade type louver box and the ring-plate type radiation-proof cover, the device has the advantages of small volume, light weight, cost reduction, relatively simple structure, and easy processing, manufacturing, maintenance, installation and cleaning.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

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 simplifications made in the spirit of the present invention are intended to be included in the scope of the present invention.

Claims

1. An atmospheric temperature measuring device is characterized by comprising a first light screen (1), a second light screen (2), an outer flow guide disc (3), an inner flow guide disc (4), a flow guide body (5), a temperature sensor probe (6), a first heat insulation fixing rod (7), a second heat insulation fixing rod (8) and a third heat insulation fixing rod (9), wherein the first heat insulation fixing rod (7) and the second heat insulation fixing rod (8) are symmetrically arranged between the first light screen (1) and the second light screen (2), the outer flow guide disc (3), the inner flow guide disc (4) and the flow guide body (5) are sequentially arranged on the first heat insulation fixing rod (7) and the second heat insulation fixing rod (8) from top to bottom, the bottom end of the third heat insulation fixing rod (9) is fixedly connected with the second light screen (2), and one end, far away from the second light screen (2), of the third heat insulation fixing rod (9) penetrates through the flow guide body (5) and extends to the inside of the flow guide body (5), the temperature sensor probe (6) is arranged at one end of the third heat insulation fixing rod (9) positioned in the flow guide body (5).

2. The atmospheric temperature measuring device according to claim 1, wherein the arc-shaped openings at the centers of the inner part of the outer flow guiding disc (3) and the inner flow guiding disc (4) are downward directed to the temperature sensor probe (6), the arc-shaped opening at the upper end of the flow guiding body (5) is directed to the temperature sensor probe (6) for further increasing the flow guiding effect, and the lower end of the flow guiding body (5) is provided with a vent slit.

3. The atmospheric temperature measuring device according to claim 1, characterized in that the inner surfaces of the outer diaphragm (3), inner diaphragm (4) and current carrier (5) are smooth and coated with a high-absorptivity black coating, and the outer surface of the current carrier (5) is provided with a high-reflectivity coating.

4. The atmospheric temperature measuring device according to claim 1, wherein the first light shielding plate (1) and the second light shielding plate (2) are made of metal, a high absorption rate coating is arranged on one side surface of the first light shielding plate (1) and the second light shielding plate (2) close to each other, and an aluminum film is arranged on one side surface of the first light shielding plate (1) and the second light shielding plate (2) far away from each other.

5. The atmospheric temperature measuring device according to claim 1, wherein the first and second adiabatic fixing bars (7, 8) are made of plastic with a low heat transfer coefficient.