CN2644001Y

CN2644001Y - Corona wire with dust collecting and windbreak function

Info

Publication number: CN2644001Y
Application number: CN 03269847
Authority: CN
Inventors: 高香林
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-08-27
Filing date: 2003-08-27
Publication date: 2004-09-29
Anticipated expiration: 2013-08-27

Abstract

The utility model relates to a corona wire with dust collecting and windbreak function, which belongs to the technical field of dedusting. The utility model is used for solving effective dust collection problem of the corona wire. The technology proposal is that the corona wire of the utility model comprises a dust collection plate, a windbreak plate and burs, wherein the dust collection plate is in a long shape plate; the surface of the dust collection plate is parallel to smoke movement direction and the long sides of the dust collection plate are perpendicular to horizontal direction; the burs are arranged along the two long sides of the dust collection plate from the top down; the windbreak plate is also in a long shape plate; the long sides of the windbreak plate are perpendicular to horizontal direction; the surface of the windbreak plate is vertically connected with the surface of the dust collection plate to form a crisscross. The cross section of the dust collection plate is in the flat shape or wave shape, or pipe shape in the middle and flat shape or wave shape on both sides. The cross section of the windbreak plate is in a groove shape, a chute shape, a plate hook shape, an arc shape, a C shape, a Z shape or other shapes. The dust collecting and flow stopping function of the utility model improves the electric parameter of the dust collecting electric field and the dust collecting effect of the negative and positive poles. The utility model greatly increases dust collecting efficiency of the electric precipitator.

Description

A kind of corona wire with the wind-shielding function that gathers dust

Technical field

The utility model relates to a kind of improved corona wire that is used for electric dust collector, belongs to flue dedusting technology field.

Background technology

In large industrial enterprises such as power plant, steel mill, the flue dedusting work that is absolutely necessary.In numerous flue cleaners, the application of electric cleaner is comparatively extensive.The space primary structure that gathers dust of electric cleaner is dust collecting pole plate and corona wire.Corona wire connects the negative pole of DC high-voltage power supply, dust collecting pole plate ground connection (anode).Between corona wire and dust collecting pole plate, apply sufficiently high DC voltage, produce high voltage electric field between corona wire and the dust collecting pole plate, gas ionization around the corona wire, be corona discharge, produce a large amount of positive and negative ion, anion moves to the dust collecting pole plate direction, cation moves to corona wire, negative ions combines with meeting by the grit in the space ash-laden gas that gathers dust in motion process, becomes charged dust, drops at last on dust collecting pole plate and the corona wire.When dust deposit behind certain thickness, take methods such as mechanical vibrator that it is removed, fall into the bottom ash bucket.In technical process in the past, collect dust and only paid attention to the effect of dust collecting pole plate, simultaneously, also the shape of dust collecting pole plate has been done multiple improvement in order to prevent the reentrainment of dust of dust collecting pole plate, and for the cathode rapping of corona wire just in order to keep the good discharge performance of corona wire.But in real work, find, the dust that is accumulated on corona wire overwhelming majority behind the process cathode rapping is dispersed again and is become reentrainment of dust to the space of gathering dust, this is actually a kind of huge waste and destruction, a large amount of electric energy that cation gathers dust had both been wasted, make a large amount of cations and positively charged dust be dispersed into the space of gathering dust again, thereby destroyed the environment that normally gathers dust of negative electrical charge.The corona wire that uses serves as at most with the RS tubular barbed wire at present, secondly is fish-bone needlework, helix, jaggies etc., and these corona wires respectively have characteristics, are suitable for various electric cleaner.But their common drawback is the positive charge dust to be caught collect poor-performing, and the dust that deposits on the corona wire when vibration dust-cleaning almost all becomes reentrainment of dust, has only low amounts of dust to fall into the bottom ash bucket.Therefore,, fully collect the dust that deposits on the corona wire and eliminate reentrainment of dust, will great effect be arranged efficiency of dust collection, the energy savings that improves electric cleaner if can improve the structure of above-mentioned corona wire.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of dust that can effectively collect the space charge positive charge that gathers dust, and can prevent a kind of corona wire with the wind-shielding function that gathers dust of reentrainment of dust.

The technical scheme that addresses the above problem is:

A kind of corona wire with the wind-shielding function that gathers dust, it is made up of dust collection plate, wind shutter and prickle, and dust collection plate is rectangular plate, and prickle is disposed on the long limit of dust collection plate both sides, and wind shutter also is rectangular plate, its plate face and dust collection plate plate face vertical fixing.

Above-mentioned corona wire, the cross sectional shape of described dust collection plate with the wind-shielding function that gathers dust be plate shaped, waveform, middle for the pipe both sides be waveform for dull and stereotyped or centre for the pipe both sides.

Above-mentioned corona wire with the wind-shielding function that gathers dust, the cross sectional shape of described wind shutter are a kind of in grooved, groove hook, plate hook type, camber, C type, the Z type shape, are provided with in the dust collection plate bilateral symmetry.

Above-mentioned corona wire with the wind-shielding function that gathers dust, the plate face width degree of described wind shutter is 1/10～1/4 of a flue channel width.

Above-mentioned corona wire with the wind-shielding function that gathers dust, described wind shutter cross sectional shape is a kind of in half grooved, half groove hook, half plate hook type, half camber, half C type, the half Z type shape, be fixedly connected on a side of dust collection plate, its width is the 1/20-1/8 of channel width.

According to the corona wire of the wind-shielding function that gathers dust of the utility model design, its dust collection plate and wind shutter can play the effect of well gathering dust; Wind shutter can make the airflow velocity ratio main flow velocity on the corona wire axis much smaller, can reduce or prevent the reentrainment of dust loss on the corona wire, especially the reentrainment of dust that produces during cathode rapping; Simultaneously, because gather dust and the choked flow effect of dust collection plate and wind shutter reduce the positive charge quantity in the space of gathering dust, improved the environment that gathers dust of negative electrical charge, the improvement and the anode that help the dust collection electric field electric parameter gather dust, and these all will improve the efficiency of dust collection of electric cleaner greatly.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 is the structural representation of another kind of embodiment of the present utility model;

Fig. 4 is the B-B cutaway view of Fig. 3;

Fig. 5～Figure 10 is the cutaway view of the different cross section shape of wind shutter;

Figure 11～Figure 17 is the schematic diagram of corona wire of the prior art.

The specific embodiment

From Figure 11～Figure 17, the schematic diagram of using more corona wire up till now be can see, RS tubular barbed wire (Figure 11), angle steel prickle wire (Figure 12), waveform prickle wire (Figure 13), jaggies (Figure 14), saw shape prickle wire (Figure 15), bar shaped prickle wire (Figure 16), fish-bone line (Figure 17) are followed successively by.Their common drawback is the positive charge dust to be caught collect poor-performing, and the dust that deposits on the corona wire when vibration dust-cleaning almost all becomes reentrainment of dust, has only low amounts of dust to fall into the bottom ash bucket.

What Fig. 1～Fig. 4 showed is the improved corona wire with the wind-shielding function that gathers dust of the utility model.It is made of dust collection plate 1, wind shutter 2 and prickle 3, is sheet metal and makes.The commissure center of dust collection plate 1 and wind shutter 2 is pipe shape (Fig. 2) or cross tabular (Fig. 4), and welding or riveted joint are adopted in the connection between them, and wind shutter 2 is a symmetric shape in dust collection plate 1 both sides.The cross sectional shape of dust collection plate 1 be plate shaped, waveform or middle for the pipe both sides be flat board or waveform.The shape of prickle 3 is identical with the prickle shape of conventional prickle wire, can adopt isosceles saw shape, right angle saw shape, needle-like prickle, rectangle prickle, trapezoidal prickle, knife-edge prickle etc., is the rectangle prickle among Fig. 1,3.The relevant determination method for parameter of the prickle on the height of above-mentioned prickle, width, the isoparametric definite method of spacing and the conventional prickle wire is identical.The modes such as can adopting spot welding, riveted joint that is connected of dust collection plate 1 and prickle 3, or dust collection plate 1 and prickle 3 are made of one.The cross sectional shape of wind shutter 2 such as Fig. 5～shown in Figure 10, can be grooved (Fig. 5), groove hook (Fig. 6), plate hook type (Fig. 7), camber (Fig. 8), C type (Fig. 9), Z type (Figure 10) etc., be provided with in the dust collection plate bilateral symmetry, the plate face width degree of wind shutter is 1/10～1/4 of a flue channel width.It is a kind of in half grooved, half groove hook, half plate hook type, half camber, half C type, the half Z type shape that wind shutter 2 can also be made cross sectional shape, is fixedly connected on a side of dust collection plate, is one-sided dissymmetrical structure, and its width is the 1/20-1/8 of channel width.

Dust collection plate of the present utility model, wind shutter have following special function: dust collection plate also has more effect except prickle is installed, because projected area is bigger, the dust collection plate dust collection effect is better; Constitute higher even field intensity between it and the positive plate, help capture with positive and negative electric charge dust; Dust collection section corona free discharge between dust collection plate and positive plate does not just produce anti-corona yet; Because dust collection plate has the effect that captures positively charged dust and absorption cation preferably, the space positive charge that gathers dust is reduced, so just can improve electric parameter greatly, promote that anode gathers dust.Wind shutter at first can barrier air, makes the airflow velocity ratio main flow velocity on the corona wire axis much smaller, even approaches zero, can reduce or prevent the reentrainment of dust loss on the corona wire, especially the reentrainment of dust loss that produces during cathode rapping; Secondly wind shutter can capture positively charged dust and neutral dust because of idiostatic with corona wire under electric power and fluid force effect; It is also the same with dust collection plate to have and improves electric parameter, promotes the effect that anode gathers dust.

During installation, corona wire places on the central axial line of adjacent two anode arranged plates, corona wire is installed on the negative electrode small frame, insulate with ground, be connected to the negative pole of high-voltage DC power supply, the plate face of dust collection plate is parallel to the flow of flue gas direction, and the long limit of plate is perpendicular to horizontal direction, and the long limit of wind shutter is perpendicular to horizontal direction.Certainly, in actual applications, can be in the passage of flue electric cleaner with the utility model and conventional corona wire interlaced arrangement, can also only arrange the corona wire that the utility model provides, can also be used with the negative electrode spoiler, promptly place the negative electrode spoiler in the entry and exit of passage, place the windproof corona wire that gathers dust at the middle part of passage, the user can select with dust removing effects as required.

Claims

1. corona wire with the wind-shielding function that gathers dust, it is characterized in that: described corona wire is made up of dust collection plate [1], wind shutter [2] and prickle [3], dust collection plate [1] is rectangular plate, prickle [3] is disposed on the long limit of dust collection plate [1] both sides, wind shutter [2] also is rectangular plate, its plate face and dust collection plate [1] plate face vertical fixing.

2. the corona wire with the wind-shielding function that gathers dust according to claim 1 is characterized in that: the cross sectional shape of described dust collection plate [1] be plate shaped, waveform, middle for the pipe both sides be waveform for dull and stereotyped or centre for the pipe both sides.

3. the corona wire with the wind-shielding function that gathers dust according to claim 2 is characterized in that: described wind shutter [2] cross sectional shape is a kind of in grooved, groove hook, plate hook type, camber, C type, the Z type shape, in dust collection plate [1] bilateral symmetry setting.

4. the corona wire with the wind-shielding function that gathers dust according to claim 3 is characterized in that: the plate face width degree of described wind shutter [2] is 1/10～1/4 of a flue channel width.

5. the corona wire with the wind-shielding function that gathers dust according to claim 4, it is characterized in that: described wind shutter [2] cross sectional shape is a kind of in half grooved, half groove hook, half plate hook type, half camber, half C type, the half Z type shape, be fixedly connected on a side of dust collection plate [1], its width is the 1/20-1/8 of channel width.