Rain and dust shielding device for high coke gas diffusion port

Abstract

The invention relates to a rain and dust shielding device for a high coke gas diffusion port, and belongs to the technical field of gas emission. Comprising a diffusing cap at the top of a diffusing pipeline, the diffusing cap comprises a prism support, each side face of the prism support is provided with an exhaust port, and a limiting frame, a rotating shaft and a movable turning plate are arranged outside each exhaust port; when the coal gas is discharged, the movable turning plate is blown by the coal gas to be turned outwards to be opened, and after the coal gas is discharged, the movable turning plate is automatically closed under the action of the gravity of the movable turning plate; the exhaust ports on the plurality of side surfaces ensure that when the external wind power is relatively large, the gas is still smoothly discharged from the exhaust ports; the inclined top plate of the prism support prevents dust and water from accumulating on the top. The diffusing cap solves the problems that dust and raindrops in the atmosphere can enter a gas diffusing opening to cause impurity deposition at the outlet end of a diffusing valve and corrosion of a valve element during diffusing of a gas pipeline, and the gas diffusing process is smooth.

Description

Technical Field

[0001] This invention belongs to the field of coal gas emission technology and relates to a device for rain and dust protection at a high-coke coal gas vent. Background Technology

[0002] Currently, most of the coal gas (high-grade coal or coking coal) generated during the steel production process in steel plants is used for combustion power generation. During power generation, when maintenance or production shutdown is required, the coal gas in the pipeline needs to be released into the atmosphere for gas venting. Some of it can be treated by combustion in a venting tower, while most boilers and gas turbines vent the coal gas into the atmosphere through a venting valve on the gas pipeline. The venting port is welded to the top of the vertically upward pipeline, with a pipe at a 90-degree angle to the upward pipeline and its opening tilted downward at a 45-degree angle to achieve the purpose of rain and dust protection. If the small pipe has one venting port, the larger pipe has two venting ports in opposite directions at 180 degrees.

[0003] In actual boiler and gas turbine maintenance, it was found that the manual or electric vent valves (most of which are ball valves) frequently became stuck or jammed during gas discharge. Inspection revealed a significant amount of caking dust deposited at the outlet of these vent valves. Figure 1 As shown. The existing venting pipe has defects. The small pipe has only one vent, and during venting, if there is a strong wind opposite the vent, it will affect the venting effect. In addition, when the vent valve is closed for a long time, the air in the plant area contains a lot of dust. This dust floats in the air and is blown into the vent by the wind opposite the vent. Some of the dust will enter the vertical venting pipe with the wind and settle at the outlet of the vent valve. When it rains, some of the rain will also enter the vent due to the wind direction, and then enter the pipe, slowly settling with the dust in the vent. At the valve outlet, the air in the factory contains fine sulfides, which are carried into the pipeline by dust or raindrops. When the sulfides come into contact with rainwater and dust, they produce a chemical reaction, which can slowly corrode the valve core and valve body of the relief valve. Over time, the dust will harden, and the valve core will rust and corrode. Eventually, the valve core will not be able to rotate, causing the relief valve to fail to open, resulting in a jam. This will prevent the timely release and closure of the valve, thus shortening its service life. Replacing the relief valve will cause certain economic losses and will also affect normal production.

[0004] The existing gas vent allows dust and raindrops from the air to enter the vent, causing debris to accumulate at the outlet of the vent valve. This debris gradually corrodes the valve core, eventually leading to the vent valve being unable to open. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a device for rain and dust protection at the high coke gas vent, which solves the problem that when gas is vented from the gas pipeline, dust and raindrops in the atmosphere will enter the gas vent, resulting in the deposition of debris and corrosion of the valve core at the outlet of the vent valve.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A device for protecting high-coke gas vents from rain and dust includes a vent cap installed at the top of the vent pipe. The vent cap includes a prism support, and each side of the prism support has an exhaust port. Each exhaust port has a rotating shaft at its upper part, and the upper part of a movable flap is rotatably connected to the rotating shaft. When venting gas, the movable flap is blown outward by the gas and opens. After venting, the movable flap automatically closes under its own weight.

[0007] Optionally, a limiting frame is provided on the outside of the exhaust port, and the rotating shaft and movable flap are arranged on the outside of the limiting frame. The vertical inner diameter of the limiting frame is smaller than the vertical length of the movable flap.

[0008] Optionally, the prism bracket at the bottom of the limiting frame is provided with a downward-sloping ramp.

[0009] Optionally, the prism support is one of a triangular prism support, a quadrangular prism support, a pentagonal prism support, or a hexagonal prism support.

[0010] Optionally, the prism support is provided with a top plate, which is inclined with a higher center and lower edges.

[0011] Optionally, the top plate includes a circular plate and an inclined plate disposed between the circular plate and the prism support.

[0012] Optionally, the inclination angle of the inclined plate is 13°~18°.

[0013] Optionally, the top plate is an arc-shaped convex plate.

[0014] Optionally, each side of the prism bracket is provided with at least two exhaust ports, and the two exhaust ports are arranged vertically.

[0015] Optionally, the rotating shaft is a stainless steel rotating shaft, and the movable flap is an aluminum alloy flap.

[0016] The beneficial effects of this invention are as follows: The device of this invention provides rain and dust protection for the vent outlet of a venting pipe. By welding a vent cap with multi-directional exhaust ports to the vent outlet at the top of the venting pipe, it ensures that the vent outlet can discharge gas into the air while preventing dust and raindrops in the air from entering the vent outlet. This prevents dust and raindrops from accumulating in the venting valve inside the venting pipe, ensuring the cleanliness of the venting valve outlet. It also prevents dirt formed by dust and water droplets from causing caking and corrosion of the valve core, while not affecting the opening and closing of the venting valve, extending the service life of the venting valve, and reducing maintenance and operating costs.

[0017] The venting cap in the device of this invention is preferably a hexagonal prism-shaped venting cap with six sides. Each side has two vents, and each vent is embedded with a rotating shaft and a movable flap. During non-venting periods, the movable flap hangs naturally under its own weight, close to the hexagonal prism support. During venting periods, it is blown open by the gas, allowing the gas to be released smoothly and blocking external dust and raindrops. Each vent is also equipped with a limiting frame to restrict the movable flap, preventing it from flipping inward. When there is no wind or the wind is weak, all 12 movable flaps on the six sides can be flipped outward. When the external wind is strong, the movable flap opposite to the wind direction will be close to the hexagonal prism support under the restriction of the limiting frame, while the movable flaps on the other sides can still be opened. The entire gas venting process is not affected by the external wind. In addition, the present invention also provides a downward sloping ramp on the prism support at the bottom of the limiting frame, which also prevents raindrops and dust from accumulating on the prism support. The raindrops and dust can slide off with the ramp, ensuring the cleanliness of the exhaust port.

[0018] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0019] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the sediment at the outlet of the original vent valve. Figure 2 This is a schematic diagram of the assembly of the venting cap of the present invention; Figure 3 This is a top view of the flare cap; Figure 4 This is a bottom view of the flared cap; Figure 5 This is a side view of the vent cap; Figure 6 forFigure 5 AA section schematic diagram Figure 1 (Activity flap closed); Figure 7 for Figure 5 AA section schematic diagram Figure 2 (Active flip panel open); Figure 8 This is a schematic diagram of Example 2; Figure 9 This is a schematic diagram of Example 3.

[0020] Figure label: 1. Venting pipe, 2. Venting cap, 3. Prism bracket, 4. Exhaust port, 5. Rotating shaft, 6. Movable flap, 7. Limiting frame, 8. Slope, 9. Top plate, 10. Circular plate, 11. Inclined plate, 12. Arc-shaped convex plate. Detailed Implementation

[0021] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0022] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0023] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0024] Please see Figures 2-9This is a device for protecting high-coke gas vents from rain and dust. It includes a vent cap 2 at the top of the vent pipe 1. The vent cap 2 includes a prism support 3, with vents 4 on each side of the prism support 3. Each vent 4 has a rotating shaft 5 at its upper part, and a movable flap 6 is rotatably connected to the upper part of the rotating shaft 5. When venting gas, the movable flap 6 is blown outwards and opens by the gas. After venting, the movable flap 6 automatically closes under its own weight. This ensures smooth gas venting and also prevents raindrops and dust from entering the vent and depositing on the vent valve of the vent pipe 1.

[0025] Furthermore, a limiting frame 7 is nested outside the exhaust port 4. The rotating shaft 5 and the movable flap 6 are located outside the limiting frame 7. The vertical inner diameter of the limiting frame 7 is smaller than the vertical length of the movable flap 6, so as to restrict the rotation of the movable flap 6 by the limiting frame 7, making it only able to flip outward and not inward. Among them, the limiting frame 7, the rotating shaft 5, and the movable flap 6 are all embedded in the prism bracket 3.

[0026] In some embodiments of the present invention, the prism support 3 includes, but is not limited to, a triangular prism support 3, a square prism support 3, a pentagonal prism support 3, and a hexagonal prism support 3, wherein the prism support 3 is preferably a hexagonal prism support 3. Multiple surfaces are provided with exhaust ports 4, ensuring smooth gas emission even in strong external winds.

[0027] Furthermore, the top of the prism support 3 is provided with a top plate 9, which is inclined with a high center and low periphery, ensuring that the top of the venting cap 2 will not accumulate water or dust.

[0028] Furthermore, each side of the prism support 3 is provided with at least two exhaust ports 4, and the two exhaust ports 4 are arranged vertically, which reduces the area of ​​a single movable flap 6; and the rotating shaft 5 is preferably a stainless steel rotating shaft 5, which is not easy to rust and corrode; the movable flap 6 is preferably an aluminum alloy flap, which is lightweight. Combined with the fact that each side of the prism support 3 is provided with at least two exhaust ports 4, the weight of each movable flap 6 is reduced, making it easier for the movable flap 6 to flip outward during the internal gas discharge process, making the gas discharge process smoother.

[0029] Example 1 In this embodiment, the top plate 9 includes a circular plate 10 and a plurality of inclined plates 11 disposed between the circular plate 10 and the prism support 3; the inclination angle of the inclined plates 11 is 13°~18°, and in some embodiments of the present invention, the inclination angle is preferably 15°. The inclined plates 11 ensure that water and dust do not accumulate on the top of the venting cap 2.

[0030] Example 2 Unlike Embodiment 2 described above, this embodiment defines the top plate 9 as an arc-shaped convex plate 12. Compared to the "circular plate 10 + inclined plate 11" form in Embodiment 1, the arc-shaped convex plate 12 eliminates the assembly and welding process, allowing for integral molding and a simpler manufacturing process. Furthermore, using the arc-shaped convex plate 12 as the top plate 9 also serves to prevent water and dust accumulation on the top of the cap 2.

[0031] Example 3 Based on the above embodiments, this embodiment further specifies that the prism support 3 at the bottom of the limiting frame 7 is provided with a downward inclined slope 8, which prevents raindrops and dust falling on the prism support 3 from accumulating on the prism support 3 at the bottom of the limiting frame 7. The falling raindrops and dust can slide off with the slope 8, ensuring the cleanliness of the exhaust port 4 and also ensuring the smooth outward flipping of the movable flap 6.

[0032] When using the device of this invention, when venting is required, the venting valve in the venting pipe 1 is opened, and the gas in the pipe flows through the pipe to the venting cap 2. Under the outward pressure of the gas, the movable flap 6 of the venting cap 2 flips upward, allowing the gas to be released into the air, thus achieving the purpose of gas venting. Because the venting cap 2 is hexagonal prism-shaped, gas can be vented in all six directions. Therefore, regardless of whether there is wind during venting or the direction of the wind, the movable flap 6 can be ensured to open, so it will not affect the venting of the gas.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A device for rain and dust protection at a high-coke gas vent, comprising a vent cap (2) installed at the top of the vent pipe (1), characterized in that: The venting cap (2) includes a prism support (3), and each side of the prism support (3) is provided with an exhaust port (4). Each exhaust port (4) is provided with a rotating shaft (5) at its upper part. The upper part of the movable flap (6) is rotatably connected to the rotating shaft (5). When the gas is discharged, the movable flap (6) is blown outward by the gas and flips open. After the gas is discharged, the movable flap (6) automatically closes under its own gravity.

2. The device for rain and dust protection at the high-coke gas vent according to claim 1, characterized in that: The exhaust port (4) is provided with a limiting frame (7) on the outside. The rotating shaft (5) and the movable flap (6) are located on the outside of the limiting frame (7). The vertical inner diameter of the limiting frame (7) is smaller than the vertical length of the movable flap (6).

3. The device for rain and dust protection at the high-coke gas vent according to claim 2, characterized in that: The bottom prism support (3) of the limiting frame (7) is provided with a downward sloping ramp (8).

4. The device for rain and dust protection at the high-coke gas vent according to claim 1, characterized in that: The prism support (3) is one of the following: triangular prism support (3), quadrangular prism support (3), pentagonal prism support (3), and hexagonal prism support (3).

5. The device for rain and dust protection at the high-coke gas vent according to claim 1, characterized in that: The prism support (3) has a top plate (9) on top, and the top plate (9) is inclined with a high center and low periphery.

6. The device for rain and dust protection at the high-coke gas vent according to claim 5, characterized in that: The top plate (9) includes a circular plate (10) and an inclined plate (11) disposed between the circular plate (10) and the prism support (3).

7. The device for rain and dust protection at the high-coke gas vent according to claim 6, characterized in that: The inclination angle of the inclined plate (11) is 13°~18°.

8. The device for rain and dust protection at the high-coke gas vent according to claim 5, characterized in that: The top plate (9) is an arc-shaped convex plate (12).

9. The device for rain and dust protection at the high-coke gas vent according to claim 1, characterized in that: Each side of the prism support (3) is provided with at least two exhaust ports (4), and the two exhaust ports (4) are arranged vertically.

10. The device for rain and dust protection at the high-coke gas vent according to claim 1, characterized in that: The rotating shaft (5) is a stainless steel rotating shaft (5), and the movable flap (6) is an aluminum alloy flap.

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