CN114894341A - Atmospheric temperature measuring device - Google Patents

Abstract

The invention discloses an atmospheric temperature measuring device, comprising a first shading plate, a second shading plate, an outer guide plate, an inner guide plate, a guide body, a temperature sensor probe, a heat insulation support rod, and a first heat insulation fixing rod , the second heat insulation fixing rod and the third heat insulation fixing rod, the first heat insulation fixing rod and the second heat insulation fixing rod are symmetrically installed between the first shading plate and the second shading plate, and the outer guide The plate, the inner guide plate and the guide body are sequentially installed on the first heat insulation fixing rod and the second heat insulation fixing rod from top to bottom. The central opening of the flow plate is downward, pointing to the temperature sensor probe, which has a certain diversion effect and can prevent the solar radiation from directly irradiating the internal temperature sensor probe. A shading plate is placed on the top and bottom of the temperature measuring device, which can effectively reduce the direct solar radiation from above and the reflected solar radiation from the underlying surface, and reduce heat pollution.

Description

An air temperature measuring device

technical field

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

Background technique

In the process of atmospheric temperature measurement, the solar radiation during the day causes the sensor to heat up, which is higher than the ambient air temperature. The error caused by this phenomenon is called the solar radiation error. At present, the louver box or radiation shield used in the weather station can avoid the direct radiation of the sun to the sensor probe and reduce the radiation error. Since the louver box blades and radiation shield ring pieces are not conducive to airflow, low airflow velocity inside the louver box or radiation shield will lead to increased radiation errors. In addition, because there are gaps between the blades of the louver box and the ring of the radiation shield, there is always a certain proportion of direct solar radiation, scattered radiation and ground reflected radiation into the instrument through the gap, and irradiated on the surface of the temperature sensor probe. This effect will also further expand the radiation error. The radiation error of the louver box and the radiation shield can reach the order of 1°C or even higher. The blades of the louver box and the ring piece of the radiation shield not only cause the problem of radiation error, but also reduce the response speed of the temperature sensor probe, causing lag error, and the lag of the wooden louver box can reach more than 10 minutes. A louver box with blades or a radiation shield with a ring piece helps to block solar radiation, but also hinders the circulation of air, which brings difficulties to the improvement of the performance of the louver box or the radiation shield.

SUMMARY OF THE INVENTION

In order to solve the deficiencies mentioned in the above background technology, the purpose of the present invention is to provide an atmospheric temperature measuring device, the device structure is composed of a double-layer guide plate, the center opening of the guide plate is downward, pointing to the temperature sensor probe, and has a certain The diversion effect can avoid direct solar radiation exposure to the internal temperature sensor probe. A shading plate is placed on the top and bottom of the temperature measuring device, which can effectively reduce the direct solar radiation from above and the reflected solar radiation from the underlying surface, and reduce heat pollution.

The object of the present invention can be realized through the following technical solutions:

An atmospheric temperature measuring device, comprising a first shading plate, a second shading plate, an outer guide plate, an inner guide plate, a guide body, a temperature sensor probe, a heat insulation support rod, a first heat insulation fixing rod, a second insulation A heat-insulating fixing rod and a third heat-insulating fixing rod are installed symmetrically between the first shading plate and the second shading plate. The flow plate and the guide body are sequentially installed on the first heat insulation fixing rod and the second heat insulation fixing rod from top to bottom, the bottom end of the third heat insulation fixing rod is fixedly connected with the second shading plate, the third heat insulation fixing rod One end of the heat insulation fixing rod away from the second shading plate penetrates the guide body and extends into the interior of the guide body, and the temperature sensor probe is mounted on one end of the third heat insulation fixing rod inside the guide body.

As a preferred solution of the present invention, the inner center arc-shaped opening of the outer guide plate and the inner guide plate points downward to the temperature sensor probe, which is beneficial to guide the airflow to the temperature sensor probe, and the arc-shaped opening at the upper end of the guide body points to the temperature sensor probe. The temperature sensor probe is used to further increase the drainage effect. The lower end of the guiding body is provided with a ventilation slit, which is conducive to the exchange of internal and external air, and can ensure the accuracy and real-time performance of temperature measurement.

As a preferred solution of the present invention, the inner surfaces of the outer guide plate, the inner guide plate and the guide body are smooth and coated with a high-absorptive black coating, and the outer surface of the guide body is provided with a high-reflection coating layer to reduce the effect of secondary reflections on the internal temperature sensor probe.

As a preferred solution of the present invention, the material of the first shading plate and the second shading plate is selected from metal, and the surface of the side of the first shading plate and the second shading plate that is close to each other is provided with a high absorptivity coating, An aluminum film is provided on the surface of the first light shielding plate and the second light shielding plate away from each other to improve the reflectivity.

As a preferred solution of the present invention, plastics with low heat transfer coefficient are used for the first heat insulation fixing rod and the second heat insulation fixing rod, which can effectively reduce thermal pollution.

The beneficial effects of the present invention are:

1. The inner center arc-shaped opening of the outer guide plate and the inner guide plate of the present invention is downward, pointing to the temperature sensor probe, which is beneficial to guide the airflow to the temperature sensor probe. The arc-shaped opening at the upper end of the guide body also points to the temperature sensor probe, which further increases the drainage effect. The lower end of the guide body has ventilation slits, which is conducive to the exchange of internal and external air, and can ensure the accuracy and real-time performance of temperature measurement;

2. The present invention is provided with a shading plate, which can effectively prevent the direct sunlight from irradiating the device and reduce the radiation error of the internal temperature sensor probe. At the same time, it can effectively prevent low-angle sunlight from entering the device in the morning and evening, and can also effectively prevent rain, snow, leaves, dust and other sediments from entering the device. A shading plate is arranged at the bottom of the device, which can prevent the reflected radiation from the underlying surface and alleviate the problem of secondary radiation pollution of the temperature sensor probe.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is the top view of the present invention;

Figure 3 is a front view of the present invention.

In the picture:

1. The first shading plate; 2. The second shading plate; 3. The outer guide plate; 4. The inner guide plate; 5. The guide body; 6. The temperature sensor probe; The second heat insulation fixing rod; 9. The third heat insulation fixing rod.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts 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", "inside", "around", etc. Indicates the orientation or positional relationship, only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, are constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention .

As shown in Figures 1-3, an atmospheric temperature measurement device includes a first shading plate 1, a second shading plate 2, an outer guide plate 3, an inner guide plate 4, a guide body 5, a temperature sensor probe 6, The thermal insulation support rod, the first thermal insulation fixed rod 7, the second thermal insulation fixed rod 8 and the third thermal insulation fixed rod 9, the first thermal insulation fixed rod 7 and the second thermal insulation fixed rod 8 are symmetrically installed on the first shading rod Between the plate 1 and the second shading plate 2, the outer guide plate 3, the inner guide plate 4 and the guide body 5 are sequentially installed 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 shielding plate 2 , the end of the third heat insulation fixing rod 9 away from the second light shielding plate 2 penetrates through the guide body 5 and extends to the inside of the guide body 5 , and the temperature sensor probe 6 is installed on one end of the third heat insulation fixing rod 9 which is located inside the guiding body 5 .

As a preferred solution of the present invention, the inner center arc-shaped opening of the outer guide plate 3 and the inner guide plate 4 points downward to the temperature sensor probe 6, which is beneficial to guide the airflow to the temperature sensor probe 6, and the upper end of the guide body 5 is arc-shaped. The shaped opening points to the temperature sensor probe 6, which is used to further increase the drainage effect. The lower end of the guide body 5 is provided with a ventilation slit, which is conducive to the exchange of internal and external air, and can ensure the accuracy and real-time performance of temperature measurement.

As a preferred solution of the present invention, the inner surfaces of the outer guide plate 3, the inner guide plate 4 and the guide body 5 are smooth and coated with a high-absorptive black coating, and the outer surface of the guide body 5 is provided with a high-reflection coating layer to reduce the influence of secondary reflection on the internal temperature sensor probe 6 .

As a preferred solution of the present invention, the material of the first shading plate 1 and the second shading plate 2 is selected from metal, and the surface of the first shading plate 1 and the second shading plate 2 close to each other is provided with a high absorptivity coating, An aluminum film is provided on the surface of the first light-shielding plate 1 and the second light-shielding plate 2 away from each other to improve the reflectivity.

As a preferred solution of the present invention, the first heat insulation fixing rod 7 and the second heat insulation fixing rod 8 are made of plastics with low heat transfer coefficient, which can effectively reduce thermal pollution.

Experiments have verified that under the same environmental conditions, the present invention can reduce the radiation error to the order of 0.05°C, while the radiation error of traditional instruments is as high as 1°C. It can be seen that the atmospheric temperature measurement device involved in this application reduces the radiation error. Compared with the traditional vane-type louver box and ring-type radiation shield, the device involved in the present invention is smaller in volume, lighter in weight, can reduce cost, has a relatively simple structure, and is easy to manufacture, maintain, install and clean.

The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and the descriptions in the above-mentioned embodiments and the description are only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have Various changes and modifications fall within the scope of the claimed invention.

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

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and simple improvements made in the essence of the present invention should be included in the protection scope of the present invention. Inside.

Claims (5)

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.

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