CN210303224U

CN210303224U - Diffuser device

Info

Publication number: CN210303224U
Application number: CN201920902115.8U
Authority: CN
Inventors: 周芳旭; 段经然; 穆林松
Original assignee: Weihai Puyi Marine Environmental Technology Co ltd
Current assignee: Weihai Puyi Marine Environmental Technology Co ltd
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2020-04-14
Anticipated expiration: 2029-06-14

Abstract

The utility model provides a diffuser, it includes connecting axle, outer tube and multi-disc guide vane, and in connecting axle, guide vane all located the outer tube, guide vane was fan-shaped, and fan-shaped inner circular arc and connecting axle fixed connection, fan-shaped outer circular arc and outer tube fixed connection, guide vane and connecting axle were 45-75 contained angles, the utility model discloses make fluid fast dispersion, mix, solved current open boats and ships desulfurization and discharged the not up to standard technical problem of wash water, but wide application in fluid dispersion, mixed field.

Description

Diffuser device

Technical Field

The utility model relates to a fluid dispersion, mixing arrangement, in particular to open boats and ships discharge diffuser for washing water.

Background

The 70 th meeting (MEPC70) of the International maritime organization maritime environmental protection Committee determines the 1 st of 2020 as the implementation time of the global 0.5% m/m fuel oil sulfur content standard of the ship.

The wet flue gas desulfurization device is the most economical and effective way to meet the exhaust emission of ship exhaust, and the washing water generated by the flue gas desulfurization device must meet the emission requirements specified in "flue gas cleaning system guideline (2015)" (mepc.259(68) resolution) passed by IMO, wherein the PH value of the discharged washing water should meet the following requirements:

the outboard monitor position PH discharge limit refers to a washing water PH value at which a PH value of a discharge water flow at a distance of 4m from an outboard discharge point reaches 6.5 in a stationary state of the ship, and this value is recorded in an ETM-a or ETM-B pattern as an outboard washing water discharge limit. The PH discharge limit of the outboard wash water may be measured directly or obtained using a calculation method approved by classification societies (e.g., an empirical formula established by computational fluid dynamics or other scientific methods).

At present, more and more open type ship desulfurization systems are accepted by classification society and shipowners, but the pH value of the washing water discharged by the open type ship desulfurization systems is basically 3-4, and the washing water cannot meet the requirement after being discharged.

Disclosure of Invention

The utility model provides a make diffuser of fluid fast dispersion, mixture, it includes connecting axle, outer tube and multi-disc guide vane, the connecting axle guide vane all locates in the outer tube, guide vane is fan-shaped, fan-shaped interior circular arc with connecting axle fixed connection, fan-shaped exterior circular arc with outer tube fixed connection, guide vane with the connecting axle is 45-75 contained angles.

Preferably, the included angle between the guide vane and the connecting shaft is 60 degrees.

Preferably, the guide vanes are four and are uniformly distributed in the outer tube.

Preferably, the guide vanes are straight or arc surfaces.

Preferably, the connecting shaft, the outer pipe and the guide vanes are made of stainless steel materials, or are made of carbon steel materials and then subjected to corrosion prevention treatment.

The utility model has the advantages that:

the utility model discloses a set up connecting axle and guide vane in the outer tube, guide vane and connecting axle contained angle are 45-75, when the fluid gets into the outer tube from one end of outer tube, change the direction when flowing through the guide vane of slope, spread to all around, make the fluid reach the purpose that the fast dispersion mixes after discharging from the outer tube, make the boats and ships desulfurization wash water obtain mixing dilution after discharging, reach the emission requirement; and the concentration of the mixed and diluted ship desulfurization washing water is reduced, the corrosion to the ship outer plate is reduced, and the service life of the ship outer plate is prolonged.

Drawings

FIG. 1 is a schematic structural view of a front view of the present invention;

fig. 2 is a perspective view of fig. 1.

The labels in the figure are: 1. outer tube, 2, guide vane, 3, connecting shaft.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments to assist understanding of the invention. The method used in the utility model is a conventional method if no special regulation is provided; the raw materials and the apparatus used are, unless otherwise specified, conventional commercially available products.

Shown by fig. 1-2, the utility model provides a diffuser, it includes connecting axle 3, outer tube 1 and multi-disc guide vane 2, and outer tube 1 is the tube-shape, and in outer tube 1 was all located to connecting axle 3, guide vane 2, and the central axis coincidence of connecting axle 3 and outer tube 1, guide vane 2 was fan-shaped, and fan-shaped inner arc and connecting axle 3 fixed connection, fan-shaped outer arc and outer tube 1 fixed connection, guide vane 2 is 45-75 contained angles with connecting axle 3. When fluid enters the outer pipe 1 from one end of the outer pipe 1, the direction of the fluid is changed when the fluid passes through the inclined guide vanes 2, and the fluid is dispersed and mixed to the periphery, so that the desulfurization washing water of the ship can be quickly dispersed and uniformly mixed after being discharged out of the outer pipe 1, and the desulfurization washing water is diluted to meet the discharge requirement; and the concentration of the mixed and diluted ship desulfurization washing water is reduced, the acidic corrosion to the ship outer plate is reduced, the service life of the ship outer plate is prolonged, and the dispersion and mixing effects are best when the included angle between the guide vane 2 and the connecting shaft 3 is 60 degrees.

In the actual manufacturing process, the guide vane 2 can be made of a straight surface or a cambered surface, one end of the guide vane is welded with the outer circumferential surface of the connecting shaft 3 in a welding mode, and the other end of the guide vane is welded with the inner circumferential surface of the outer pipe 1 in a welding mode. The guide vanes 2 are evenly distributed in the outer pipe 1, and when the guide vanes 2 are four, the effects of fast dispersion and mixing of fluid are best, and welding and manufacturing are convenient.

The connecting shaft 3, the outer pipe 1 and the guide vanes 2 are all made of stainless steel materials, or are subjected to corrosion prevention treatment after being made of carbon steel materials, so that the corrosion prevention performance of the connecting shaft 3, the outer pipe 1 and the guide vanes 2 can be enhanced, the connecting shaft, the outer pipe 1 and the guide vanes are not easily corroded by fluid, and the service life of the connecting shaft is prolonged.

The method is characterized in that a CFD fluid simulation test method is adopted to carry out numerical simulation on the ship desulfurization washing water through two discharge pipelines of adding the diffuser and not adding the diffuser, under the condition of not adding the diffuser, the concentration of SO2 on the surface point of a sphere with the diameter of 4m is 1.83mmole/kg at most, which is equivalent to the ph value of 4.73, is lower than the discharge requirement of the ship desulfurization waste water, namely the ph value is 6.5, and does not meet the discharge requirement; under the condition of adding the diffuser, the highest concentration of SO2 on the surface of the 4m sphere is 0.404mmole/kg, which is equivalent to the PH value of 6.63, and is higher than the PH value requirement of the ship desulfurization wastewater discharge of 6.5, thereby meeting the discharge requirement. The application of the diffuser enables the passing fluid to be rapidly dispersed and mixed to the periphery, so that the emission of the desulfurization washing water of the ship meets the requirement, and the service life of the ship outer plate is prolonged.

The utility model discloses can be used for the emission of boats and ships desulfurization washing water, also can be used to the quick diffusion that other waste water discharged.

In the description of the present invention, it should be understood that the terms "left", "right", "upper", "lower", "top", "bottom", "front", "rear", "inner", "outer", "back", "middle", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

However, the above description is only an embodiment of the present invention, and the scope of the present invention should not be limited thereto, so that the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should be covered by the claims of the present invention.

Claims

1. A diffuser is characterized by comprising a connecting shaft, an outer pipe and a plurality of guide vanes, wherein the connecting shaft and the guide vanes are arranged in the outer pipe, the guide vanes are fan-shaped, a fan-shaped inner arc is fixedly connected with the connecting shaft, a fan-shaped outer arc is fixedly connected with the outer pipe, and an included angle of 45-75 degrees is formed between each guide vane and the connecting shaft.

2. A diffuser according to claim 1, wherein said guide vanes are angled at 60 ° to said connecting shaft.

3. The diffuser of claim 1 wherein said guide vanes are four pieces evenly distributed within said outer tube.

4. A diffuser as claimed in claim 1, wherein said guide vanes are straight or curved.

5. The diffuser of claim 1, wherein said connecting shaft, said outer tube and said guide vanes are made of stainless steel or made of carbon steel and then subjected to corrosion-resistant treatment.