Low-flow-resistance and low-noise steam exhausting, emptying and silencing rain cover

Abstract

The utility model relates to a rain-proof and bird-proof device at the top of a silencer of a high-temperature and high-pressure gas discharge valve of a nuclear power station, in particular to a low-flow-resistance and low-noise steam-discharging, emptying and silencing rain-proof cover. The low-flow-resistance and low-noise steam exhausting, emptying and silencing rain cover comprises a barrel, a bird-proof net is arranged on the barrel, a water collecting blade assembly is arranged in the barrel and comprises a water collecting column and a plurality of layers of water collecting blades, the water collecting column is of a hollow structure, open holes matched with the water collecting blades are formed in the water collecting column, and a drainage pipe is arranged at the bottom of the water collecting column. One side of the drainage pipe is provided with a drainage groove. The utility model solves the problems in the prior art, and provides a low-flow-resistance and low-noise steam exhaust emptying silencing rain cover, which can effectively prevent birds and other foreign matters from entering a silencer and a pipeline, effectively prevent rain, snow and steam from being discharged upwards through the rain cover, solves the problem that the steam is discharged all around and easily scalds workers, and improves the working efficiency. And the flow resistance and the noise are reduced.

Description

Technical Field

[0001] This utility model relates to a rainproof and bird-proof device on the top of the silencer of the high-temperature and high-pressure gas emission valve in a nuclear power plant, and in particular to a low-flow-resistance, low-noise exhaust venting soundproof and rainproof cover. Background Technology

[0002] Nuclear power plants and thermal power plants need to emit high-temperature and high-pressure gases during operation. These gases are then depressurized and silenced by a silencer before being released into the atmosphere. Silencers are generally installed vertically. To protect the silencer pipes and steam pipes and to prevent rain, snow, and debris from entering the silencer, a rainproof device needs to be installed on top.

[0003] Commonly used rain cover structures are conical or umbrella-shaped. Rain covers with this structure can achieve a certain rain protection effect. However, when steam is discharged, it will be directly discharged into the rain cover. After being blocked by the rain cover, it will spread out in all directions. The spray-like steam that spreads out in all directions can easily burn the staff, posing a certain safety hazard. In addition, the steam is turned at a certain angle after being blocked by the rain cover before being discharged, which increases the airflow resistance. Summary of the Invention

[0004] This invention solves the problems existing in the prior art and provides a low-flow-resistance, low-noise exhaust venting silencer and rainproof cover, which can effectively block birds and other foreign objects from entering the silencer and pipes, while effectively preventing rain and snow. Steam is discharged upward through the rainproof cover, solving the problem of steam being discharged in all directions and easily scalding workers. It is an exhaust venting silencer and rainproof device that reduces flow resistance and noise.

[0005] The technical solution of this utility model is as follows:

[0006] A low-flow-resistance, low-noise exhaust venting soundproof and rainproof cover includes a cylindrical body with a bird-proof net. A water-collecting blade assembly is provided inside the cylindrical body. The water-collecting blade assembly includes a water-collecting column and several layers of water-collecting blades. The water-collecting column has a hollow structure and openings that cooperate with the water-collecting blades. A drain pipe is provided at the bottom of the water-collecting column, and a drain groove is provided on one side of the drain pipe.

[0007] The water collecting blades consist of two layers: an upper layer and a lower layer. The upper and lower layers are evenly arranged and angled towards the water collecting column.

[0008] The upper and lower water collecting blades completely cover the cylinder on the vertical projection plane. The two outer lines of the upper water collecting blades and the two outer lines of the lower water collecting blades are without gaps and overlap at an angle of 2±0.5°.

[0009] The inclination angle between the upper and lower water collecting blades is 10°±2°.

[0010] Both the upper and lower water collecting blades have small "n"-shaped reinforcing covers with micropores on their outer cross-sections.

[0011] The upper and lower water collecting blades have a drainage ditch-shaped cross section, and the angle between the tangents at the upper left and right sides of the drainage cross section is optimally 120°±30°.

[0012] The water collection column is equipped with elliptical end caps at both ends.

[0013] The bird netting has a modular structure, consisting of several triangular mesh panels joined together, and the number of triangles and the number of water-collecting blades are coprime numbers.

[0014] The slope of the conical surface of the bird-proof net is set to 15±5°.

[0015] The inclination angle of the drain pipe is 8±2°.

[0016] The beneficial effects of this utility model are as follows:

[0017] The upper and lower layers of rainproof blades are evenly staggered, effectively preventing rain and snow from entering the silencer and pipes. Steam is discharged upwards through the rainproof cover, solving the problem of steam escaping to all sides and easily scalding workers.

[0018] Each section of the water collecting blade is shaped like a drainage ditch. The top of the outer section is equipped with a small n-shaped reinforcing cover containing several micro-holes, which effectively reduces steam flow resistance and impact force, reduces airflow regeneration noise, and at the same time, the micro-perforated plate plays a sound-absorbing function, further reducing airflow noise.

[0019] Rainwater flows into the water collection column through the guide vanes and then is discharged through the bottom drain pipe, facilitating rainwater collection and discharge.

[0020] The bird net is composed of multiple triangles and is assembled with the wind duct by bolts, which facilitates transportation and installation. At the same time, the number of the upper and lower water collecting blades and the number of triangles are coprime, which reduces the noise generated by the airflow. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic cross-sectional view of the present invention.

[0023] Figure 3 This is a schematic diagram of the water collecting blade of this utility model;

[0024] The components are labeled as follows: 1. Cylinder; 2. Bird net; 3. Water collection blade assembly; 4. Upper water collection blade; 5. Lower water collection blade; 6. Water collection column; 7. Drainage pipe; 8. Drainage trough; 9. Small "n" shaped reinforcing cover. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the embodiments, but the scope of protection of the present invention is not limited thereto. Example

[0026] This embodiment relates to a low-flow-resistance, low-noise exhaust venting silencer and rainproof cover. The rainproof cover includes a cylindrical body 1, with flanges at both the upper and lower ends of the cylindrical body 1. The flanges have mounting holes. Figure 1 As can be seen, the cylinder 1 can be connected to the top of the pipe or the silencer via a flange, and the bird net 2 is installed on the flange at the other end of the cylinder 1.

[0027] In this embodiment, the cylinder 1 is equipped with a water collecting blade assembly 3. The water collecting blade assembly 3 has multiple layers (described as two layers in this embodiment) of water collecting blades. The upper layer of water collecting blades 4 and the lower layer of water collecting blades 5 are connected to the central water collecting column 6. The two layers of water collecting blades outside the water collecting column 6 are staggered. The upper and lower layers of water collecting blades are evenly distributed along the circumference of the cylinder 1 and are inclined towards the water collecting column 6. Drainage holes are opened in the water collecting column 6, and the number, size, and position of the holes correspond one-to-one with the water collecting blades. When viewed from above, the water collecting blade assembly 3 can cover any space inside the cylinder, thereby ensuring that the falling rainwater can be completely caught by the water collecting blades, ensuring good rain protection. At the same time, high-temperature steam can be discharged upward from the staggered gaps between the upper and lower layers. The water collection column 6 has a hollow structure with elliptical end caps at both ends. The bottom of the water collection column 6 has four holes along the circumference and is connected to four drainage pipes 7. The drainage pipes 7 extend to the outside of the cylinder 1 and are connected to the drainage trough 8 outside the cylinder. When rainwater falls, the rainwater flows into the water collection column 6 along the water collection blades 4 and 5, then flows into the drainage trough 8 along the drainage pipes 7, and finally is discharged to the ground through the pipes. This structure facilitates the collection and discharge of rainwater.

[0028] In this embodiment, the cross-sections of the upper water collecting blade 4 and the lower water collecting blade 5 are drainage ditch-shaped cross-sections, including optimized drainage ditch cross-sections (wing-front guide section), which effectively reduces steam flow resistance and impact force, and reduces airflow regeneration noise. The optimal tangent angle between the left and right upper side lines of the guide section is 120±30°. The water collecting blades are molded to ensure product consistency, thereby enabling high-temperature steam to be discharged evenly and reducing pressure loss in the discharge system.

[0029] In this embodiment, the upper water collecting blade 4 and the lower water collecting blade 5 can completely cover the cylinder 1 on the vertical projection plane. There is no gap between the two outer lines of the upper water collecting blade 4 and the two outer lines of the lower water collecting blade 5, and the overlap angle is 2±0.5°. The tilt angle of the upper water collecting blade 4 and the lower water collecting blade 5 is 10°±2°. The tilt angle and the height of the water collecting blades can be adjusted appropriately according to the rainfall and dust conditions of the place of use in order to meet the usage requirements.

[0030] Furthermore, both the upper water collecting blade 4 and the lower water collecting blade 5 are provided with small "n"-shaped reinforcing covers 9 (edge ​​openings) with micropores on the outer cross section. While reinforcing the water collecting blades, the micro-perforated plates also play a sound-absorbing function, further reducing airflow noise.

[0031] In this embodiment, the water collection column 6 has a hollow structure with elliptical caps at both ends, so that rainwater will not leak from the top into the water collection column and will not accumulate at the top. The top of the water collection column 6 has a ring-shaped mounting plate to facilitate the assembly of the bird net 2. Four drainage pipes 7 are installed at the bottom of the column. The drainage pipes 7 are round-bottomed grooves with an inclination angle of 8±2°, which facilitates the discharge of rainwater while reducing airflow resistance.

[0032] The further improved bird netting 2 has a split structure, composed of several triangular mesh covers spliced ​​together. The appropriate number can be set according to different diameter rain covers. The number of triangles and the number of water collecting blades are coprime numbers, which can reduce airflow regeneration noise. The split structure facilitates transportation and hoisting. The cone slope of the bird netting is set at 15±5° to prevent debris from accumulating in the bird netting.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A low flow resistance, low noise, steam exhaust, vented, sound attenuating, rain cover, characterized by: The utility model provides a water collecting device, including cylinder, be equipped with bird protection net on the cylinder, be equipped with water collecting vane subassembly in the cylinder, water collecting vane subassembly includes water collecting column and several layers of water collecting vane, water collecting column is hollow structure, be equipped with the aperture of cooperation with water collecting vane on water collecting column, water collecting column bottom is equipped with drain pipe, one side of drain pipe is equipped with drainage groove.

2. The low-flow-resistance, low-noise, steam-bleed-vent-silencing, rain-protective cover of claim 1, wherein: Several layers of water collecting vane are 2 layers, and are upper layer water collecting vane and lower layer water collecting vane respectively, and the upper layer water collecting vane and the lower layer water collecting vane are evenly arranged and are inclined to the water collecting column.

3. The low-flow-resistance, low-noise, steam-bleed-vent, sound-attenuating, weatherhood of claim 2, wherein: The upper layer water collecting vane and the lower layer water collecting vane completely cover the cylinder on the vertical projection plane, the two outer lines of the upper layer water collecting vane and the two outer lines of the lower layer water collecting vane have no gap, and the coincident angle is 2±0.5°.

4. A low flow restriction, low noise, steam and air exhaust silencer rain cover according to any one of claims 2-3, characterized in that: The inclination angle of the upper layer water collecting vane and the lower layer water collecting vane is 10°±2°.

5. The low-flow-resistance, low-noise, steam-bleed-vent, sound-attenuating, weatherhood of claim 2, wherein: The upper layer water collecting vane and the lower layer water collecting vane are both provided with a small "n" shaped reinforcing cover with micropores on the outer side section.

6. The low-flow-resistance, low-noise, steam-bleed-vent, sound-attenuating, weatherhood of claim 2, wherein: The water collecting vane section is a drainage ditch shaped section, and the tangent angle of the left and right upper side line points of the water collecting vane section is 120°±30°.

7. The low-flow-resistance, low-noise, steam-bleed-vent, sound-attenuating, weatherhood of claim 1, wherein: The water collecting column is provided with an oval end.

8. The low-flow-resistance, low-noise, steam-bleed-vent, sound-attenuating, weatherhood of claim 1, wherein: The bird protection net is a split structure, is spliced by several triangular net covers, and the number of triangles and the number of water collecting vanes are prime numbers.

9. The low-flow-resistance, low-noise, steam-bleed-vent, sound-attenuating, weatherhood of claim 8, wherein: The taper slope of the bird protection net is 15±5°.

10. The low-flow-resistance, low-noise, steam-bleed-vent, sound-attenuating, weatherhood of claim 1, wherein: The inclination angle of the drain pipe is 8±2°.

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