Self-cooling type high-temperature-resistant rain shade with flow guide function

Abstract

A support is provided with a hollow-out structure used for forming air circulation in the horizontal direction, a shielding body comprises an outer plate and an inner plate, the outer plate is arranged on the support, the vertical projection of the outer plate at least covers equipment, and the outer plate inclines towards the periphery of the outer plate along the vertex position of the middle of the outer plate. An air outlet is formed in the upper portion of the outer plate, multiple air inlets are formed in the lower portion of the outer plate, the inner plate is arranged on the support, or a top cavity is formed in the lower end face of the outer plate, and the air inlets are communicated with the top cavity. The outer plate can achieve the rain shielding function, the air inlet holes and the air outlet holes in the outer plate and the top cavity form an air channel, air can enter from the air inlet holes and then conduct heat transfer with the upper end face of the inner plate, then the air is exhausted from the air outlet holes, and cooling of the inner plate is achieved. The self-cooling structure with the flow guide function continuously cools the shielding body through the chimney effect of hot air, is simple in structure, safe and reliable, and can avoid high-temperature damage.

Description

Technical Field

[0001] This utility model relates to the field of rainproof device technology, and in particular to a self-cooling, high-temperature resistant rain cover with a flow guiding function. Background Technology

[0002] VOCs in oil and gas storage and transportation and tank farms are characterized by intermittent emissions, requiring the use of VCU (Vapor Combustor Unit) technology for combustion emissions. After VOCs are incinerated, they are directly emitted at high temperatures. Therefore, VCUs need to be insulated with ceramic fiber cotton with high thermal insulation performance. However, rainwater will wet the ceramic fiber cotton blocks when it rains, resulting in poor thermal insulation effect and the risk of falling off. Therefore, rain shelters need to be designed for VCUs.

[0003] Moreover, the temperature of the flue gas emitted by the VCU exceeds 850℃, so the rain cover needs to be designed with high-temperature resistant materials. The traditional rain cover is made of high-temperature resistant stainless steel. However, after long-term operation at high temperatures, stainless steel will still undergo high-temperature creep. In addition, the traditional rain cover is a simple conical structure, which has high resistance to hot flue gas emission. When the hot flue gas passes through the rain cover, the flue gas is pressed down and the carbon steel body of the VCU equipment is damaged, which makes the rain cover and the metal on the top of the VCU easy to crack and be damaged.

[0004] In the prior art, such as the rainproof device for the air inlet of a screw air compressor with application number 202022222847.8, it can effectively prevent rainwater from entering the air inlet, but it does not operate in a high-temperature environment. Utility Model Content

[0005] The purpose of this invention is to provide a self-cooling, high-temperature resistant rain cover with a flow guiding function. The outer panel can provide rain protection, and the air inlet and outlet on the outer panel form a gas passage with the top cavity. Air can enter through the air inlet, transfer heat with the upper surface of the inner panel, and then be discharged through the air outlet, thus cooling the inner panel. This self-cooling structure with a flow guiding function utilizes the "chimney effect" of hot air to continuously cool the cover. It has a simple structure, is safe and reliable, and can avoid high-temperature damage.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a self-cooling, high-temperature resistant rain cover with airflow guiding function, comprising a bracket set on the upper part of the equipment and a shield set on the bracket. The bracket has a hollow structure for forming horizontal airflow. The shield includes an outer plate and an inner plate. The outer plate is set on the bracket, and its vertical projection at least covers the equipment. The outer plate is inclined from its central apex to its periphery. The upper part of the outer plate is provided with an air outlet, and the lower part is provided with multiple air inlets. The inner plate is set on the bracket or forms a top cavity on the lower end surface of the outer plate. The air inlets communicate with the top cavity.

[0007] As a further optimization, the outer plate has an axisymmetric structure, and the plurality of air inlets are arranged symmetrically about the vertical central axis of the outer plate, with the number being two to five.

[0008] As a further optimization, the tilt angle of the outer panel is α, 15°≤α≤50°, the vertical projection of the outer panel is a circle, and the diameter of the vertical projection is d0, the diameter of the air outlet is d1, d1 is 1 / 8 to 1 / 4 of d0, and the diameter of the air inlet is d2, d2 is 1 / 3 to 1 / 2 of d1.

[0009] As a further optimization, the periphery of the inner plate is connected to the lower end face of the outer plate, forming the top cavity between them.

[0010] As a further optimization, the inner plate has an axisymmetric structure, and the inner plate is inclined from its central vertex to its periphery.

[0011] As a further optimization, the vertical projection coverage device of the inner panel can prevent hot flue gas from coming into contact with the outer panel.

[0012] As a further optimization, the self-cooling high-temperature resistant rain cover with airflow guiding function also includes an extension plate. The extension plate is located at the top of the device and protrudes outward horizontally from the device to prevent the exhaust hot fumes from damaging the device. The end of the extension plate away from the device is provided with a downwardly bent reinforcing plate to prevent the extension plate from deforming due to heat.

[0013] As a further optimization, the extension plate is located within the vertical projection of the outer plate.

[0014] As a further optimization, the bracket has an enclosed structure and is located on the upper side of the equipment. The bracket has multiple through holes that penetrate its body laterally in a matrix pattern.

[0015] As a further optimization, the bracket includes multiple support rods, which are disposed on the upper side of the equipment, and the outer plate is disposed on the support rods.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This utility model is provided with an outer panel, an inner panel, and a top cavity formed by the two. The outer panel can realize the rainproof function. The air inlet and air outlet on the outer panel form a gas passage with the top cavity, which can realize that the air enters from the air inlet, transfers heat with the upper end surface of the inner panel, and is discharged from the air outlet, thus cooling the inner panel. This self-cooling structure with air guiding function uses the "chimney effect" of the hot air itself to continuously cool the shield. The structure is simple, safe and reliable, and can avoid high temperature damage.

[0018] 2. In a particular embodiment, the extension plate and the reinforcing plate can prevent damage to the equipment from hot flue gas and prevent the extension plate from deforming due to heat. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the present invention.

[0020] Figure 2 This is a three-dimensional sectional view of the present invention.

[0021] Figure 3 This is a schematic diagram of gas flow according to the present invention.

[0022] Figure 4 This is a flow field simulation diagram of this utility model. Detailed Implementation

[0023] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0024] like Figures 1 to 4 As shown, a self-cooling, high-temperature resistant rain cover with airflow guiding function includes a bracket 20 disposed on the upper end of a device 10 (VCU) and a shield body disposed on the bracket 20. The bracket 20 has a hollow structure to form horizontal airflow. Preferably, the bracket 20 includes a plurality of support rods 21 disposed on the upper side of the device 10, with gaps between adjacent support rods 21 forming the aforementioned hollow structure for airflow. The shield body includes an outer plate 30 and an inner plate 40. The outer plate 30 is disposed on the upper end of the bracket 20 (such as the support rods 21), and its vertical projection at least covers the device 10. Preferably, the vertical projection of the outer plate 30 extends radially beyond the device. The vertical projection range of 10 is such that the outer plate 30 is inclined from its central apex to its periphery. This inclined structure allows rainwater to flow down without accumulating on the outer plate 30. The upper part of the outer plate 30 is provided with an air outlet 301, and the lower part is provided with multiple air inlets 302. The inner plate 40 is set on the support 20 or on the lower end surface of the outer plate 30 to form a top cavity 300. When the support 20 is a support rod 21, the inner plate 40 is set on the lower end surface of the outer plate 30 to form a top cavity 300 with a closed structure. The air inlets 302 are connected to the top cavity 300, that is, a gas passage is formed on the shielding body by the air inlets 302, the top cavity 300 and the air outlets 301.

[0025] In this invention, the self-cooling, high-temperature resistant rain cover with a flow guiding function firstly provides rain protection. The outer panel 30 covers the device 10. The structure of the outer panel 30 and the fact that its edges extend beyond the device 10 allow rainwater to easily escape from the upper surface of the inclined outer wall 30, preventing accumulation and preventing rainwater from dripping onto the device 10 or its insulation layer 11. Furthermore, regarding the emission of hot flue gas generated by the device 10, the hot flue gas is emitted from bottom to top within the inner cavity 100 of the device 10. When the hot flue gas moves upward to above the top of the device 10, it is blocked by the inner panel 40 and then diverted after being guided. The diverted hot flue gas is discharged through the hollow structure on the support 20 (i.e., the gap between adjacent support rods 21). The reduced diversion resistance of the diverted hot flue gas prevents vibration of the entire cover. During the discharge of hot flue gas, the hot flue gas interacts with the inner panel 40. Since the lower end face of the outer plate 30 is in contact with the hot flue gas, even if the inner plate 40 is made of high-temperature resistant stainless steel, there is still a risk of high-temperature creep damage due to the high temperature of the hot flue gas. Therefore, an air inlet 302 and an air outlet 301 are provided on the outer plate 30. When the hot flue gas flows below the inner plate 40, it will heat the inner plate 40. After heat conduction, the inner plate 40 will heat the air at the bottom of the upper end face of the inner plate 40, i.e., the top cavity 300. Since the density of the heated air is reduced, it will move towards the upper part of the top cavity 300. Therefore, the hot air can be discharged through the air outlet 301. At the same time as the hot air is discharged, a suction force is also formed. The air on one side of the upper end face of the outer plate 30 is drawn into the top cavity 300 through the air inlet 302. The air that initially enters has a relatively low temperature and can continuously cool the inner plate 40, keeping the inner plate 40 at a relatively stable low temperature state, avoiding its high-temperature creep, and thus ensuring the structural stability of the entire shield.

[0026] This invention utilizes the "chimney effect" of hot air to continuously cool the inner plate 40 (shielding body). It has a simple structure, is safe and reliable, and the temperature of the shielding body is controlled below 500℃ after cooling, which can avoid high-temperature damage. Moreover, the thickness of the stainless steel plate used in the preparation of the shielding body used at a lower temperature can be appropriately reduced, which can save equipment costs.

[0027] It should be noted that the outer plate 30 and inner plate 40 in the shielding body have a structure that matches the outline of the device 10. For example, when the device 10 has a cylindrical outline, the outer plate 30 and inner plate 40 are also designed to have a circular structure in vertical projection.

[0028] Preferably, the outer plate 30 has an axisymmetric structure, and the multiple air inlets 302 are arranged symmetrically about the vertical central axis of the outer plate 30, and the number is two to five.

[0029] The tilt angle of the outer plate 30 is α, 15°≤α≤50°, preferably 25°≤α≤35°. The vertical projection of the outer plate 30 is circular, and the diameter of the vertical projection of the outer plate 30 is d0. The diameter of the air outlet 301 is d1, and the diameter of the air inlet 302 is d2. The parameter relationships between the above data are set, such as d1 being 1 / 8 to 1 / 4 of d0, and d2 being 1 / 3 to 1 / 2 of d1. According to CFD flow field simulation, the tilt angle of the outer plate 30 and the inner plate 40, the size and number of the air inlet 302, and the size of the air outlet 301 are reasonably designed to form a self-circulating cooling airflow within the shield, so that a rapid airflow is formed on the upper surface of the inner plate 40.

[0030] Furthermore, the periphery of the inner plate 40 is connected to the lower end face of the outer plate 30, forming a top cavity 300 between them. The inner plate 40 has an axisymmetric structure, and it is inclined from its central vertex to its periphery. The vertical projection of the inner plate 40 covers the device 10. The hot flue gas generated by the device 10 can be completely blocked by the inner plate 40 and come into contact with the lower end face of the inner plate 40 during its upward movement, thus preventing the hot flue gas from acting on the outer plate 30.

[0031] Preferably, the self-cooling, high-temperature resistant rain cover with airflow guiding function also includes an extension plate 50. The extension plate 50 is located at the upper end of the device 10 and protrudes horizontally outward from the device 10. The extension plate 50 is located within the vertical projection of the outer plate 30. Since the vertical projection of the outer plate 30 extends outward beyond the vertical projection of the device 10, that is, the edge of the outer plate 30 protrudes from the outer wall of the device 10, the hot flue gas will undergo a downward pressure process at the edge of the outer plate 30. The downward pressure of the hot flue gas will cause heat loss to the carbon steel device 10. Therefore, the extension plate 50 is provided so that the hot flue gas can be discharged horizontally without affecting the body of the device 10. Furthermore, a downwardly bent reinforcing plate 51 is provided at the end of the extension plate 50 away from the device 10. The presence of the reinforcing plate 51 can ensure that the extension plate 50 is not easily deformed at high temperatures.

[0032] In another embodiment of this utility model, the support 20 may not use the support rod 21. Instead, the support 20 is an enclosed structure and is located on the upper side of the device 10. It has a plurality of through holes that penetrate its body in a matrix shape. The through holes are used to discharge hot flue gas.

[0033] In another embodiment of this utility model, baffles (not shown) can be provided on the upper end of the outer plate 30 above the air outlet 302 and beside the air inlet 302, such as a first baffle and a second baffle. The first baffle has an umbrella-shaped structure and is connected to the outer plate 30 by a vertical rod. The first baffle is located above the air outlet 301 and at a certain distance from the air outlet 301, and its vertical projection covers the air outlet 301. The presence of the first baffle does not affect the air being discharged through the air outlet 301, and can also prevent rainwater from entering the top cavity 300 through the air outlet 301. The second baffle can be directly set on the side of the outer plate 30 near the top of the air inlet 302, which can prevent rainwater from entering the top cavity 300 through the air inlet 302. Of course, even if the above-mentioned baffle is not set, or if rainwater enters the top cavity 300 through the air outlet 301 or air inlet 302, the rainwater will fall on the upper surface of the inner plate 40. After the lower surface of the inner plate 40 is heated, the heat is transferred to the upper surface through heat conduction, which can evaporate the water droplets located on the upper surface of the inner plate 40.

[0034] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A self-cooling high-temperature-resistant rain shelter with a flow guiding function, characterized in that, The device comprises a support arranged at the upper end of the device, the support having a hollow structure for forming horizontal air flow, and a shielding body arranged on the support, the shielding body comprising an outer plate and an inner plate, the outer plate being arranged on the support and covering the device in vertical projection, the outer plate being inclined from the central top position to the peripheral position, the upper part of the outer plate being provided with an air outlet hole, and the lower part being provided with a plurality of air inlet holes, the inner plate being arranged on the support or the lower end surface of the outer plate to form a top cavity, and the air inlet holes being communicated with the top cavity.

2. The self-cooling high-temperature-resistant rain shelter with a flow guide function according to claim 1, characterized in that, The outer plate is an axisymmetric structure, and the plurality of air inlet holes are arranged in axisymmetric about the vertical central axis of the outer plate, and the number is two to five.

3. The self-cooling high-temperature-resistant rain shelter with a flow guide function according to claim 2, characterized in that, The inclination angle of the outer plate is α, 15°≤α≤50°, the vertical projection of the outer plate is a circle, and the diameter of the vertical projection is d0, the diameter of the air outlet hole is d1, d1 is 1 / 8 to 1 / 4 of d0, and the diameter of the air inlet hole is d2, d2 is 1 / 3 to 1 / 2 of d1.

4. The self-cooling high-temperature-resistant rain shelter with a flow guide function according to any one of claims 1 to 3, characterized in that, The peripheral position of the inner plate is connected with the lower end surface of the outer plate, and the top cavity is formed therebetween.

5. The self-cooling high-temperature-resistant rain shelter with a flow guide function according to claim 4, characterized in that, The inner plate is an axisymmetric structure, and the inner plate is inclined from the central top position to the peripheral position.

6. The self-cooling high-temperature-resistant rain shelter with a flow guide function according to claim 4, characterized in that, The vertical projection of the inner plate covers the device.

7. The self-cooling high-temperature-resistant rain shelter with a flow guide function according to claim 1, characterized in that, Further comprising an extension plate arranged at the upper end of the device and horizontally protruding outward from the device, and a reinforcing plate arranged at the end of the extension plate away from the device and bent downward.

8. The self-cooling high-temperature-resistant rain shelter with a flow guide function according to claim 7, characterized in that, The extension plate is located in the vertical projection of the outer plate.

9. The self-cooling high-temperature-resistant rain shelter with a flow guide function according to claim 1, characterized in that, The support is a closed structure arranged at the upper end of the device, and a plurality of through holes are arranged on the support in a matrix shape.

10. The self-cooling high-temperature-resistant rain shelter with a flow guide function according to claim 1, characterized in that, The support comprises a plurality of support rods arranged at the upper end of the device, and the outer plate is arranged on the support rods. The support is a closed structure arranged at the upper end of the device, and a plurality of through holes are arranged on the support in a matrix shape. The support comprises a plurality of support rods arranged at the upper end of the device, and the outer plate is arranged on the support rods.

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