CN201366382Y - Cyclone separator with orifice plate exhaust structure - Google Patents

Abstract

The utility model relates to a cyclone separator with an orifice exhaust structure, comprising a guide, a separation pipe, an exhaust pipe and an ash hopper. The lower port of the exhaust pipe is provided with a connected orifice plate, and small holes are uniformly arranged on the orifice plate; the lower part of the exhaust pipe is coaxially penetrated into the upper part of the separation pipe, and the exhaust pipe and the separation pipe are installed coaxially On the guider on the exhaust pipe, several guide vanes evenly arranged in the circumferential direction on the guider and the inner wall of the separation pipe form a flow channel for turning the airflow. The lower end of the separation pipe is provided with a connected circular arc cone section and is sealed and installed in the ash hopper. The utility model has the advantages of high separation efficiency, small pressure drop, and low energy consumption. It can be used alone or form a multi-pipe cyclone separator, and can be widely used in dust removal of high-temperature flue gas in petrochemical industry, purification and solid particle separation. Recycling can also be applied to industrial sectors such as coal gasification, plastics, light industry and metallurgy.

Description

A cyclone separator with an orifice exhaust structure

technical field

The utility model relates to a cyclone separator with an orifice exhaust structure, which belongs to a device for separating dust in gas by using centrifugal force.

Background technique

The current general axial air intake cyclone separator is composed of a guide, a separation pipe, an exhaust pipe and an ash hopper. The lower part of the exhaust pipe goes deep into the upper part of the separation pipe coaxially. There is a guide coaxially installed on the exhaust pipe between the exhaust pipe and the separation pipe. Several guide vanes evenly arranged in the circumferential direction on the guide are connected to the inside of the separation pipe. The walls form flow channels that divert the airflow. The lower part of the separation pipe is closed and installed in the ash hopper. The common problem in the process of industrial application is that there are high turbulent pulsation and strong secondary vortex motion in the airflow in the local area of the cyclone separator outlet, which results in poor operating flexibility of the cyclone separator, large pressure drop, and high energy consumption, which seriously hinders the development of the cyclone separator. Enterprise energy saving and efficiency enhancement.

Utility model content

The technical problem to be solved by the utility model is to provide a cyclone separator with an orifice exhaust structure with high separation efficiency, small pressure drop and low energy consumption.

The utility model is a cyclone separator with an orifice exhaust structure, which includes a guide, a separation pipe and an exhaust pipe. The lower port of the exhaust pipe is provided with an orifice plate connected as a whole, and the orifice plate is uniformly arranged A small hole; the lower end of the separation tube is provided with a connected circular arc cone section.

The utility model is a cyclone separator with an orifice plate exhaust structure, wherein the height of the orifice plate is 0.05 to 4 times the inner diameter of the exhaust pipe; the cross-sectional shape of the small hole on the orifice plate is circular, square or elliptical; The angle θ of the small hole is 0°-45°, θ is the angle between the central axis of the small hole and the central axis of the exhaust pipe; the total area of the small holes is 30%-80% of the inner diameter area of the exhaust pipe.

The utility model is a cyclone separator with an orifice exhaust structure, wherein the height of the arc cone section is 0.6 to 0.9 times the inner diameter of the separation pipe; the radius of the arc is 1.3 to 1.6 times the inner diameter of the separation pipe; The inner diameter of the lower port is 0.5 to 0.7 times the inner diameter of the separation pipe, and 0.9 to 1.2 times the inner diameter of the exhaust pipe.

The advantages and positive effects of the cyclone separator with an orifice exhaust structure of the utility model are: the orifice structure is installed at the lower port of the exhaust pipe, so that the airflow entering from the lower port of the exhaust pipe is separated by the number of openings. One strand becomes multiple strands, which enhances the ability to suppress the high turbulent pulsation and strong secondary vortex motion of the airflow in the local area of the outlet, and greatly reduces the pressure drop and energy consumption of the cyclone tube; the opening area of the orifice plate and the opening angle Changes can adjust the interaction between multiple airflows, weaken the loss of rotational kinetic energy of the airflow in the exhaust pipe, and further reduce the pressure drop of the cyclone pipe; the orifice plate at the entrance of the exhaust pipe reduces the exhaust flow area and increases the cyclone The rotation strength of the airflow in the tube prolongs the time for particles to be separated in the cyclone tube and improves the separation efficiency of the cyclone tube.

Description of drawings

Fig. 1 is a schematic diagram of the construction principle of a cyclone separator with an orifice exhaust structure of the utility model;

Fig. 2 is A-A sectional schematic diagram (enlarged) of Fig. 1;

Figure 3 is a schematic diagram of the opening angle (enlarged).

In the figure 1. Cyclone separator inlet, 2. Guide, 3. Separation pipe, 4. Exhaust pipe, 5. Orifice plate, 6. Arc cone section, 7. Arc cone section lower port, 8. Separation pipe Lower port, 9. ash hopper, 10. small hole, 11. lower port of exhaust pipe.

Detailed ways

A cyclone separator with an orifice exhaust structure of the utility model includes a separation pipe 3, an exhaust pipe 4 and an ash hopper 9, the lower part of the exhaust pipe 4 goes deep into the upper part of the separation pipe 3 coaxially, and the exhaust pipe 4 Between the separation pipe 3 is a guide 2 coaxially installed on the exhaust pipe 4, and several guide vanes arranged uniformly along the circumferential direction on the guide 2 and the inner wall of the separation pipe 3 form a flow channel for turning the airflow; The lower port of the tube 4 is provided with an orifice plate 5 that is connected to the exhaust pipe 4 coaxially, and the small holes 10 are evenly arranged on the orifice plate 5; ; The lower part of the separation pipe 3 is closed and installed in the ash hopper 9 .

The height of the orifice plate 5 is 0.1 times the internal diameter of the exhaust pipe 4; the cross-sectional shape of the small hole 10 on the orifice plate 5 is circular; the angle θ of the small hole 10 is 0°, and θ is the central axis of the small hole 10 and the exhaust gas. The included angle between the central axes of the pipes 4; the total area of the small holes 10 is 50% of the area of the inner diameter of the exhaust pipe 4.

The height of the arc cone section 6 is 0.7 times the inner diameter of the separation pipe 3; the arc radius of the arc cone section 6 is 1.4 times the inner diameter of the separation pipe 3; the inner diameter of the lower port 7 of the arc cone section is the inner diameter of the separation pipe 3 0.6 times of the diameter is 0.9 times of the inner diameter of the exhaust pipe 4.

When in use, the dust-laden airflow enters the cyclone separator from the inlet 1 of the cyclone separator in the axial direction, passes through the guide vane on the guider 2 and the inner wall of the separation pipe 3 to form a flow channel that turns the airflow, and then transforms into a high-speed rotating motion, and the particles in it Under the action of centrifugal force, it gradually moves to the inner wall of the separation tube 3 and is separated. The gas-solid two-phase centrifugation is realized in the separation pipe 3 and the circular arc cone section 6 by the particles entrained by the air flow downward. The separated particles enter the arc cone section 6 along with the downward airflow, and enter the ash hopper 9 from the lower port 7 of the arc cone section. The purified downward airflow turns back into the upward airflow at the lower part of the circular arc cone section 6, flows upward through the lower port 8 and the small hole 10 of the separation pipe, and finally enters the exhaust pipe 4 to be discharged. A small part of the airflow entering the ash hopper 9 from the lower port 7 of the arc cone section turns back at the bottom of the ash hopper 9 to form an upward airflow, enters the arc cone section 6 through the lower port 7 of the arc cone section, and also flows upward through the lower port 8 of the separation pipe , small hole 10, enter exhaust pipe 4 to discharge at last.

The utility model has a simple and compact structure of a cyclone separator with an orifice exhaust structure, which can be used alone or form a multi-pipe cyclone separator, and can be widely used in dust removal, purification and solid The recovery of particles can also be applied to industrial sectors such as coal gasification, plastics, light industry and metallurgy.

Claims (3)

1, a kind of cyclone separator that has the orifice plate exhaust structure, it is by guider (2), separator tube (3), blast pipe (4), orifice plate (5), circular arc awl section (6), ash bucket (9) is formed; Described blast pipe (4) lower end is provided with the orifice plate (5) that is connected as a single entity, and it is characterized in that being provided with uniformly on described orifice plate (5) aperture (10); Described separator tube (3) lower end is provided with the circular arc awl section (6) that is connected as a single entity.

2, a kind of cyclone separator that has the orifice plate exhaust structure according to claim 1 is characterized in that described orifice plate (5) highly is 0.05～4 times of blast pipe (4) internal diameter; Described orifice plate (5) has aperture (10), and the cross sectional shape of aperture (10) is circular, square and oval; Described aperture (10) is to offer with angle θ, and angle θ is the central axis of described aperture (10) and the angle between blast pipe (4) central axis, and angle θ is 0 °～45 °; Described aperture (10) gross area is 30%～80% of described blast pipe (a 4) internal diameter area.

3, a kind of cyclone separator that has the orifice plate exhaust structure according to claim 1, the height that it is characterized in that described circular arc awl section (6) are 0.6～0.9 times of separator tube (3) interior diameter; The arc radius of described circular arc awl section (6) is 1.3～1.6 times of separator tube (3) interior diameter; Described circular arc awl section lower port (7) interior diameter is 0.5～0.7 times of separator tube (3) interior diameter; Described circular arc awl section lower port (7) interior diameter is 0.9～1.2 times of blast pipe (4) interior diameter.

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