CN2592280Y

CN2592280Y - Cone-diffusion cyclone separator

Info

Publication number: CN2592280Y
Application number: CN 02288300
Authority: CN
Inventors: 田子平; 陈永国
Original assignee: Shanghai Jiaotong University
Current assignee: Shanghai Jiaotong University
Priority date: 2002-12-12
Filing date: 2002-12-12
Publication date: 2003-12-17
Anticipated expiration: 2012-12-12

Abstract

The utility model relates to a cone-diffusion cyclone separator, wherein, an intake pipe of which is a scroll case type of 180 DEG and is arranged on the upper part of a conic cylinder body, an exhaust pipe is in the shape of inverted cone and is inserted into the cylinder body via the middle of the scroll case type intake pipe, and the insertion depth of the exhaust pipe is shallower and is bigger than the height of the intake pipe. The lower part of the conic cylinder body is connected with an inverted cone-shaped flue-dust retainer. The new structure of the utility model enlarges the flow area of an inlet and reduces the resistance of the inlet, the secondary carrying is not easily caused, and accordingly, the separation efficiency of solid particles is improved.

Description

Conical diffusion type cyclone separator

Technical field:

The utility model relates to a kind of conical diffusion type cyclone separator, is used for the solid particle of separation bubble, belongs to the Thermal Power Engineering technical field.

Background technology:

In boiler, chemical industry equipment, there is Dual-Phrase Distribution of Gas olid, often needs on the technology solid particle in the air-flow is separated.With the CFBB is example, need with cyclone separator the solid particle in the flue gas stream be separated at boiler furnace outlet, again solid particle is returned lower furnace portion, finishes the interior circulation of stove of solid particle, to improve efficiency of combustion and desulfuration efficiency.The cylindrical shell and the outlet section of existing cyclone separator are cylindrical, influence the solid particle separating effect owing to the air-flow secondary carries, and the resistance of outlet section is also bigger than normal.In these general cylindrical tube cyclone separators, some air-flow enters the bottom ash bucket with particle, produces inside vortex when air-flow upwards flows to blast pipe again, and the particle secondary that has separated is carried, and taken away by exit flow, influence the solid particle separative efficiency.

The utility model content:

The purpose of this utility model is at the deficiencies in the prior art, and a kind of conical diffusion type cyclone separator of new structure is provided, to improve the resistance of solid particle separative efficiency and reduction blast pipe.

For realizing such purpose, cyclone separator of the present utility model comprises air inlet pipe, blast pipe, separator cylindrical shell and flue-dust retainer, air inlet pipe is 180 ° of scroll casing types, be installed in the top of divergent-cone wall, blast pipe is a back taper, inserts in the cylindrical shell in the middle of the scroll casing type air inlet pipe, and its insertion depth is more shallow, but greater than the height of air inlet pipe, the bottom of divergent-cone wall connects the back taper flue-dust retainer.

180 ° of scroll casing type air inlet pipe sectional dimensions of the present utility model are determined by inlet velocity, back taper blast pipe and bottom flue-dust retainer, and selecting for use by the requirement of efficient separate solid particles of the cone angle of conic tube and cyclone separator each several part physical dimension determined.

When conical diffusion type cyclone separator of the present utility model is worked, after dust-contained airflow enters cylindrical shell from 180 ° of scroll casing type inlets, be subjected to centrifugal action rotation and descend, then along conical wall decline, the gas major part that has purified is discharged from blast pipe by the isolated particle of centrifugal force.Because the divergent-cone wall lower diameter increases, the inside vortex intensity that the fraction air-flow produces when upwards flowing to blast pipe a little less than, and apart from cylinder inboard wall apart from increase, be difficult for causing secondary to carry, thereby improve the solid particle separative efficiency.

Conical diffusion type cyclone separator of the present utility model can reach the purpose of efficient low-resistance, adopt the scroll casing type inlet to be easy to increase the inlet flow area, inlet volute shape annular space makes inlet air flow nearer apart from cylinder inboard wall, reduced the settling height of particle, helped the separation of particle to inwall.Scroll casing type inlet also can reduce the mutual interference mutually of inlet air flow and inside vortex air-flow, reduces entrance friction.Adopt the blast pipe of back taper, insertion depth is more shallow, can reduce the resistance of outlet section.

The drawing explanation and the specific embodiment:

Fig. 1 is the schematic top plan view of the utility model structure.

Fig. 2 is the front elevational schematic of the utility model structure.

Shown in Figure 2 as Fig. 1, cyclone separator of the present utility model comprises air inlet pipe 1, blast pipe 3, separator cylindrical shell 2 and flue-dust retainer 4, air inlet pipe 1 is 180 ° of scroll casing types, be installed in the top of divergent-cone wall 2, blast pipe 3 is a back taper, inserts in the cylindrical shell 2 in the middle of scroll casing type air inlet pipe 1, and its insertion depth is more shallow, but greater than the height of air inlet pipe 1, the bottom of divergent-cone wall 2 connects back taper flue-dust retainer 4.

In separator when work, after dust-contained airflow enters cylindrical shell 2 from the inlet of 180 ° of scroll casing type air inlet pipe 1, be subjected to the centrifugal action rotation and descend, then descended along the conical wall of cylindrical shell 2 by the isolated particle of centrifugal force, and the gas major part that has purified is from blast pipe 3 discharges.Because the lower diameter of divergent-cone wall 2 increases, the inside vortex intensity that produces when the fraction air-flow upwards flows to blast pipe 3 a little less than, and apart from cylindrical shell 2 inwalls apart from increase, be difficult for causing secondary to carry, thereby improve the solid particle separative efficiency.

Claims

1, a kind of conical diffusion type cyclone separator, comprise air inlet pipe (1), blast pipe (3), separator cylindrical shell (2) and flue-dust retainer (4), it is characterized in that air inlet pipe (1) is 180 ° of scroll casing types, be installed in the top of divergent-cone wall (2), blast pipe (3) is a back taper, inserts in the cylindrical shell (2) in the middle of scroll casing type air inlet pipe (1), and its insertion depth is more shallow, but greater than the height of air inlet pipe (1), the bottom of divergent-cone wall (2) connects back taper flue-dust retainer (4).