Ventilation type anti-radiation device

Abstract

The utility model discloses a ventilation type anti-radiation device, which relates to the technical field of anti-radiation covers, and comprises an upper cover body and a lower cover body, the upper cover body is detachably connected with the lower cover body, the upper cover body and / or the lower cover body are / is provided with a flow guide grid for air flow circulation and spiral rising, no gap exists in the overlook direction of the flow guide grid, and a gap exists in the side view direction of the flow guide grid. A meteorological sensor is installed in the upper cover body. The ventilation grid has the capabilities of guiding flow and enhancing airflow circulation, accelerates air circulation, further effectively reduces the temperature in the cover body, is simple in structure, low in cost and convenient to produce and maintain, fully considers radiation and rain and snow protection, and is superior to an existing protective cover framework in ventilation efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of radiation shield, in particular to a ventilation type radiation protection device. BACKGROUND

[0002] Meteorological sensor radiation shield is a device for protecting the sensor from the sun's radiation and other external interference. Although the radiation shield can block part of the solar radiation, part of the radiation will be absorbed by the shield body and emitted in the form of heat radiation, causing the temperature of the shield body and the sensor to rise. The material of the radiation shield usually has low thermal conductivity, which makes it difficult for the heat inside the shield body to dissipate to the external environment. Heat radiation exchange also occurs between the various surfaces inside the shield body, further exacerbating the accumulation of heat inside. In addition, the ventilation hole design of the radiation shield is unreasonable, with too small or unevenly distributed ventilation area, resulting in poor air flow inside, which cannot effectively remove the heat, especially when the external wind speed is low, it cannot provide enough forced convection, exacerbating the accumulation of heat inside the shield.

[0003] When the ventilation condition of the radiation shield is poor, the temperature inside the radiation shield will rise directly. In addition, the sensor will generate some heat during operation. If the ventilation is poor, these heat cannot be dissipated in time, which will also cause the temperature of the sensor to continue to rise. Long-term high temperature will cause the performance of the sensor to decline, and even damage, and the temperature of the temperature sensor is too high, which will cause the measurement result to be high, thereby affecting the measurement accuracy of the temperature and humidity sensor. Due to the measurement error of the temperature sensor, the distortion of the entire meteorological observation data may occur, thereby affecting the accuracy of the weather forecast. Therefore, it is urgent to design a ventilation type radiation protection device. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a ventilation type radiation protection device to solve the problems existing in the prior art, so that ventilation and air permeability are realized inside the radiation shield, and the internal temperature is reduced.

[0005] To achieve the above-mentioned purpose, the utility model provides the following scheme:

[0006] The utility model provides a ventilation type radiation protection device, which comprises an upper shield body and a lower shield body, the upper shield body is detachably connected with the lower shield body, airflow circulation and spiral rising guide grating are arranged on the upper shield body and / or the lower shield body, the guide grating has no gap in the overhead direction and has a gap in the side direction, and a meteorological sensor is installed in the upper shield body.

[0007] Preferably, the upper shield body and the lower shield body are both conical funnel type and the large end of the conical type is connected, the diameter of the cylindrical barrel of the upper shield body is larger than that of the lower shield body, the cylindrical barrel of the upper shield body is used for installing the meteorological sensor, and the cylindrical barrel of the lower shield body is a gas outlet.

[0008] Preferably, at least one layer of the flow guide grid is arranged on the tapered surface of the upper cover body at equal intervals.

[0009] Preferably, a plurality of layers of the flow guide grid are arranged on the tapered surface of the lower cover body at equal intervals.

[0010] Preferably, the flow guide grid comprises a support strip and a plurality of tapered rings with different diameters, wherein the support strip is connected with a plurality of coaxial tapered rings at equal intervals, the inner diameter and the outer diameter of each tapered ring are linearly increased from bottom to top, the tapered ring with the smallest diameter is connected with the air outlet of the lower cover body, and the gap between adjacent tapered rings is an air hole.

[0011] Preferably, at least two support strips are connected with the outer edge of the tapered ring at equal intervals in the circumferential direction, and a reinforcing rib is arranged between the support strip and the tapered surface of the tapered ring and inclined inwardly; the reinforcing rib is provided with a triangular slope and symmetrically arranged on both sides of the support strip, the included angle between the triangular slope and the central axis of the lower cover body is 10°-80°, and the included angle between the triangular slope and the profiled conical surface of the lower cover body is 10°-50°.

[0012] Preferably, the included angle between the conical surface of each tapered ring and the central axis is 40°-80°; the inner diameter of the upper tapered ring is smaller than the outer diameter of the lower tapered ring.

[0013] Preferably, the distance between adjacent tapered rings is 1 / 20-1 / 5 of the width of the tapered surface of the tapered ring, and the width of the tapered surface of the tapered ring is at least 5 mm and the thickness is at least 1 mm.

[0014] Preferably, the included angle between the profiled conical surface of the upper cover body and the central axis is 35°-65°, and the diameter of the air outlet of the lower cover body is 1 cm-3 cm.

[0015] Preferably, the material of the upper cover body and the lower cover body comprises metal and plastic, the outer surface of the upper cover body and the lower cover body is coated with a diffuse reflection anti-ultraviolet waterproof coating, and the inner surface of the upper cover body is coated with black paint or a high-efficiency heat dissipation coating.

[0016] Compared with the prior art, the utility model discloses the following technical effects:

[0017] The ventilation grid has the ability of guiding flow and enhancing airflow circulation, accelerates air circulation, effectively reduces the temperature in the cover body, has simple structure and low cost, is convenient for production and maintenance, fully considers the protection of radiation and snow, and is superior to the existing protective cover structure in ventilation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings described in the following embodiments are only some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0019] Figure 1 Structure diagram of the ventilation type radiation protection device in the embodiment of the present application Figure One ;

[0020] Figure 2 Structure diagram of the ventilation type radiation protection device in the embodiment of the present application Figure Two ;

[0021] Figure 3 Top view structure diagram of the lower cover body in the embodiment of the present application

[0022] Figure 4 Structure diagram of the lower cover body in the embodiment of the present application

[0023] Figure 5 Sectional structure diagram of the lower cover body in the embodiment of the present application

[0024] Figure 6 Structure diagram of the air flow simulation in the embodiment of the present application Figure One ;

[0025] Figure 7 Structure diagram of the air flow simulation in the embodiment of the present application Figure Two ;

[0026] In the drawings: 1 - upper cover body, 2 - lower cover body, 3 - air outlet hole, 4 - conical surface ring, 5 - support strip, 6 - reinforcing rib. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] The present application provides a ventilation type radiation protection device to solve the problems in the prior art, so that ventilation is realized in the radiation protection cover, and the internal temperature is reduced.

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Example 1

[0031] like Figures 1 to 7 As shown, this embodiment provides a ventilated radiation protection device, including an upper cover and a lower cover, which are detachably connected. The upper cover and / or the lower cover are provided with airflow guiding grids for air circulation and spiral ascent. The guiding grids have no gaps when viewed from above, but have gaps when viewed from the side. A meteorological sensor is installed inside the upper cover.

[0032] As an optional embodiment, both the upper and lower covers are conical funnel-shaped, with the larger ends of the cones connected by bolts. The cylindrical diameter of the upper cover is larger than that of the lower cover. The cylindrical section of the upper cover is used to mount the meteorological sensor, while the cylindrical section of the lower cover serves as the air vent. The cylindrical section of the upper cover has a top cover for placing and securing the communication and computing circuit boards of the sensor.

[0033] As an optional solution, in this embodiment, at least one layer of flow-guiding grids is provided at equal intervals on the conical surface of the upper cover.

[0034] As an optional solution, in this embodiment, several layers of airflow guide grids are evenly spaced on the conical surface of the lower cover. This embodiment has a simple structure, requires no multi-piece assembly, and is easy to manufacture and maintain.

[0035] As an optional solution, the airflow guide grid in this embodiment includes a support bar and several conical rings of different diameters, smaller at the top and larger at the bottom. Several coaxially arranged conical rings are connected at equal intervals on the support bar, so that the inner and outer diameters of each conical ring linearly increase from bottom to top, forming a dish-shaped cavity. The smallest diameter conical ring is connected to the air outlet of the lower cover, and the gaps between adjacent conical rings serve as ventilation holes. In this embodiment, the airflow guide grid, designed with angles and curved surfaces, can increase the intake air volume. The grid adopts an integrated airflow guide dish-shaped cavity, possessing both airflow guiding and enhancement capabilities. Simultaneously, the internal dish-shaped cavity facilitates airflow. For upward airflow, an internal swirling channel design is used to achieve swirling directed towards the sensor area, accelerating air circulation.

[0036] As an optional solution, the outer edge of the conical ring in the embodiment is connected with at least two support strips in the circumferential direction, and a inwardly inclined reinforcing rib is arranged between the support strip and the conical surface of the conical ring, so that different conical rings can be fixed; the reinforcing rib is provided with a triangular slope and is symmetrically arranged on both sides of the support strip, the angle between the triangular slope and the central axis of the lower cover body is 10°-80°, and the angle between the triangular slope and the profile conical surface of the lower cover body is 10°-50°. The support strip in the embodiment can divide the ventilation conical ring into several areas, and multiple support strips can be arranged according to the actual structure. The embodiment preferably has two areas, and the reinforcing rib is designed with a slope, so that the airflow entering from the lower structure can be guided upward through the slope, thereby forming a rotational flow directed to the sensor. The angle between the reinforcing rib and the conical ring is between 40° and 80°, and the slope or curved surface form can guide the airflow on the same layer upward on the slope. The interconnection between the cross-layer conical rings is realized through the support strips, and the airflow can be converged on the same vertical plane.

[0037] As an optional solution, the angle between the conical surface of each conical ring and the central axis in the embodiment is 40°-80°, which is convenient for forming a spiral upward airflow.

[0038] As an optional solution, the inner diameter of the upper conical ring of the two adjacent conical rings is smaller than the outer diameter of the lower conical ring in the embodiment. The conical rings are arranged in a stacked and spaced manner, which can ensure that light cannot be obliquely incident on the sensor deployment area. For direct incidence, the problem of heat radiation of sunlight can be avoided through the grid shadow, and the function of preventing rain and snow can also be achieved.

[0039] As an optional solution, the distance between the adjacent conical rings in the embodiment is 1 / 20-1 / 5 of the width of the conical surface of the conical ring, the width of the conical surface of the conical ring is at least 5 mm, the thickness is at least 1 mm, and the top outer side of the conical ring is provided with a rounded corner. The rounded corner in the embodiment can make the airflow inlet larger, the airflow passage narrower, and the outlet also larger. Under weak wind conditions or when heat radiation causes positive pressure in the sensor area due to the decrease in air density, the flow guide grid can drive external air to the meteorological sensor area, thereby increasing the wind volume and carrying away the heat at the meteorological sensor.

[0040] As an optional solution, the angle between the profile conical surface of the upper cover body and the central axis and the angle between the profile conical surface of the lower cover body and the central axis in the embodiment are both 35°-65°, which can effectively prevent the influence of rainwater from all directions on the sensor in a rainy environment; the entire upper structure forms a conical cavity, and air flows and conducts in the cavity. The diameter of the air outlet of the lower cover body is 1 cm-3 cm, and the air outlet can also be designed as an inlet that is larger than an outlet, so as to increase the flow rate of the airflow entering the conical structure from the bottom.

[0041] As an option, the material of the upper cover body and the lower cover body in the embodiment includes metal and plastic, and engineering plastic or other environment-resistant materials can be used.

[0042] The embodiment proposes a new radiation cover structure, and solves the problem that the actual detection temperature of the temperature sensor is higher than the actual environment temperature due to heat accumulation in the radiation cover caused by poor ventilation in a small space. Figures 6-7 As shown in a fluid dynamics (CFD, Computational Fluid Dynamics) air flow simulation diagram, the air flow flows along the Y axis at an initial speed of 2 m / s, and after passing through the structure of the embodiment, it can be seen that the ventilation is obviously improved, and the air flow in the grid area is enhanced to 3 m / s, and the air flow to the sensor part can be basically maintained at about 2 m / s.

[0043] The principle and implementation mode of the utility model are described by applying specific examples in the utility model, and the above embodiment is only used to help understand the method and core idea of the utility model; meanwhile, for general technical personnel in the field, the specific implementation mode and application range will be changed according to the idea of the utility model. In conclusion, the content of the specification should not be understood as a limitation of the utility model.

Claims

1. A vented radiation protection device, characterized in that: The upper cover and the lower cover are detachably connected, the upper cover and / or the lower cover is provided with a flow guide grid for air flow circulation and spiral rising, the flow guide grid has no gap in the top view and has a gap in the side view, and the upper cover is provided with a meteorological sensor.

2. The vented radiation shielding device of claim 1, wherein: The upper cover and the lower cover are both conical funnel-shaped and connected at the large end of the conical shape, the cylindrical barrel of the upper cover has a larger diameter than the cylindrical barrel of the lower cover, the cylindrical barrel of the upper cover is used for mounting the meteorological sensor, and the cylindrical barrel of the lower cover is an air outlet.

3. The vented radiation shielding device of claim 1, wherein: At least one layer of the flow guide grid is equidistantly arranged on the conical surface of the upper cover.

4. The vented radiation shielding device of claim 1, wherein: Several layers of the flow guide grid are equidistantly arranged on the conical surface of the lower cover.

5. The vented radiation shielding device of claim 1, wherein: The flow guide grid comprises a support strip and a plurality of conical rings with different diameters, the support strip is connected with a plurality of coaxially arranged conical rings at equal intervals, the inner diameter and the outer diameter of each conical ring are linearly increased from bottom to top, the conical ring with the smallest diameter is connected to the air outlet of the lower cover, and the gap between adjacent conical rings is an air hole.

6. The vented radiation shielding device of claim 5, wherein: At least two support strips are connected to the outer edge of the conical ring in the circumferential direction, and a reinforcing rib is arranged between the support strip and the conical surface of the conical ring and inclined inwardly; the reinforcing rib is provided with a triangular slope and symmetrically arranged on both sides of the support strip, the included angle between the triangular slope and the central axis of the lower cover is 10°-80°, and the included angle between the triangular slope and the profile conical surface of the lower cover is 10°-50°.

7. The vented radiation shielding device of claim 5, wherein: The included angle between the conical surface of each conical ring and the central axis is 40°-80°; the inner diameter of the upper conical ring of the adjacent two conical rings is smaller than the outer diameter of the lower conical ring.

8. The vented radiation shielding device of claim 5, wherein: The spacing between adjacent conical rings is 1 / 20-1 / 5 of the width of the conical surface of the conical ring, the width of the conical surface of the conical ring is at least 5 mm, and the thickness is at least 1 mm.

9. The vented radiation shielding device of claim 1, wherein: The included angle between the profile conical surface of the upper cover and the lower cover and the central axis is 35°-65°; and the diameter of the air outlet of the lower cover is 1 cm-3 cm.

10. The vented radiation shielding device of claim 1, wherein: The materials of the upper cover and the lower cover include metal and plastic, the outer surfaces of the upper cover and the lower cover are coated with a diffuse reflection anti-ultraviolet waterproof coating, and the inner surface of the upper cover is coated with black paint or a high-efficiency heat dissipation coating.

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