CN203886670U - Self-tensioning fixing device of cathode line of electric deduster - Google Patents

Abstract

The utility model relates to a self-tensioning and fixing device for cathode wires of an electric precipitator, which comprises a cathode wire, an upper frame and a lower frame arranged in the electric precipitator, and the upper frame is carried on the top box of the electric precipitator through a suspension rod and a porcelain bottle , the upper end of the cathode line is suspended on the upper frame, and the lower end passes through the positioning hole set by the lower frame and is connected with a weight. The cathode wire is restrained and positioned in the vertical and horizontal directions at the same time, and is self-tensioned by the weight. The positioning of the cathode wire is stable and reliable, avoiding the problems of horizontal swing and jumping up and down during operation, and ensuring the stable operation of the electric field of the electrostatic precipitator. Improve dust collection or mist removal efficiency.

Description

Self-tensioning and fixing device for cathode wire of electrostatic precipitator

technical field

The utility model technology relates to a cathode suspension device of an electric precipitator, in particular to a self-tensioning and fixing device for a cathode line of a wet electric precipitator.

Background technique

The electrostatic precipitator is an air purification device used to capture dust in the air in a dusty environment. A high-voltage direct current is passed through the cathode line of the electrostatic precipitator to ionize and charge the dust particles. Under the action of the electric field force, the dust particles are separated from the dust-containing gas to achieve the purpose of dust collection and removal.

In the existing electrostatic precipitator, the cathode line is usually installed by welding the connecting plate on the frame, and fixing the cathode line with bolts or through the opening of the frame through bolt connection. This fixing method is difficult to ensure the straightness and firmness of the cathode wire, especially during the operation of the electrostatic precipitator, the flue gas temperature is high, and the length of the cathode wire is deformed and elongated by heat, resulting in a decline in discharge performance; In the case of a large airflow deviation, there will often be a large swing of the polar line, which will lead to fluctuations in the operating voltage of the electric field, and even the cathode line will fall off, which will affect the service life of the device and the reliability of operation.

Contents of the invention

The purpose of the utility model is to provide a self-tensioning and fixing device for the cathode of an electric precipitator, which overcomes the problems that the existing cathode line is not firmly fixed and the deflection range is relatively large during operation.

The self-tensioning and fixing device for the cathode wire of the electrostatic precipitator of the utility model includes a cathode wire, an upper frame and a lower frame arranged in the electrostatic precipitator. The end of the line is hoisted on the upper frame, and the lower end is connected with a weight and passes through the positioning hole set by the lower frame.

The cathode wire is composed of a steel wire inner core and a lead-antimony alloy outer layer.

The lower frame includes vertical and horizontal connecting plates, and the positioning holes are located at the junctions of the vertical and horizontal connecting plates.

The positioning hole is lined with a ferrule.

The inner diameter of the ferrule decreases from top to bottom.

The lower frame is pulled and fixed on the lower box body of the electrostatic precipitator through turnbuckle bolts and self-heating anti-condensation insulating rods.

In this device, the cathode wire is self-tensioned by hanging and connecting the weight at the lower end, and the positioning holes of the lower frame make the cathode wire be restrained and positioned in the vertical and horizontal directions at the same time, and the ferrule can restrict the weight from jumping upwards. It solves the problem of the horizontal swing and up and down jump of the cathode line during operation, so the positioning of the cathode line is stable and reliable. In the case of high flue gas flow velocity and large airflow deviation, it can still ensure the stable operation of the electric field of the electrostatic precipitator, and improve the efficiency of dust collection or removal. fog efficiency.

Description of drawings

Figure 1 is a schematic diagram of the structure of the self-tensioning and fixing device for the cathode wire of the electrostatic precipitator;

Figure 2 is a schematic cross-sectional view of A-A;

Fig. 3 is an enlarged schematic diagram of the positioning structure of the lower end of the cathode wire.

In the figure: 1—porcelain bottle, 2—suspension rod, 3—upper frame, 4—cathode wire, 4-1—stainless steel wire inner core, 5—turnbuckle bolt assembly, 6—self-heating insulating rod, 7—lower frame, 7-1—longitudinal and horizontal connecting plates, 8—plumb, 9—ferrule, 10—electrostatic precipitator.

Detailed ways

The structure of the cathode wire self-tensioning and fixing device will be further described below with reference to the accompanying drawings.

Referring to FIG. 1 , FIG. 2 and FIG. 3 , the upper frame 3 is carried on the top box of the electrostatic precipitator 1 through the suspender 2 and the porcelain bottle 1 . The lower frame 7 includes vertical and horizontal connecting plates 7-1 (Fig. 2), and positioning holes are provided at the junctions of each vertical and horizontal connecting plates. The upper end of the cathode wire 4 is suspended on the upper frame 3 , and the lower end passes through the positioning hole of the lower frame 7 and is connected with a weight (conical plumb weight) 8 . The lower frame 7 is pulled and fixed to the lower box of the electrostatic precipitator 1 through turnbuckle bolts 5 and self-heating insulating rods 6 . The self-heating insulating rod 6 is lined with an auxiliary electric heating device, which can avoid condensation and creepage under wet flue gas conditions.

Figure 3 shows that the positioning hole is lined with a ferrule 9, the cathode wire 4 passes downward through the ferrule 9 and the tapered plumb weight 8 (the tapered plumb bob is provided with a central hole), and then the lower end of the cathode wire 4 is tied. The self-weight of the tapered plumb weight will be stretched taut by the suspended cathodic wire 4. The outer layer is made of lead-antimony alloy and contains a stainless steel wire inner core 4-1 to increase the strength of the polar line and meet the bearing capacity of the bottom cone 8. Each cathode wire 4 has a diameter of φ2-3mm.

The ferrule 9 has a large upper opening and a small lower opening, which is convenient for the threading operation of the cathode wire 4, and limits the conical plumb weight 8 to limit the upward jump of the weight. The tension can be adjusted and accurately centered by rotating the conical plumb weight 8.

Since the flue gas contains corrosive acid mist, the components must meet the anti-corrosion requirements. In this device, the insulating support porcelain bottle 1 is made of acid-resistant 2205 duplex stainless steel, the lower frame 7 is made of glass fiber reinforced plastic, the cathode wire 4 is made of lead-antimony material, and the surfaces of other components need to be treated with glass flakes for anticorrosion.

Claims (6)

1. electric precipitator cathode line is from tensioning fixture, it is characterized in that comprising cathode line, upper frame and the underframe be located in electric cleaner, upper frame is carried on the top casing of electric cleaner by suspension rod and porcelain vase, described cathode line upper end is hung and is connected on upper frame, and lower end is connected with weight and passes the set locating hole of underframe.

2. electric precipitator cathode line according to claim 1, from tensioning fixture, is characterized in that described cathode line is made up of steel wire inner core and lead-antimony alloy skin.

3. electric precipitator cathode line according to claim 2, from tensioning fixture, is characterized in that described underframe includes connecting plate in length and breadth, and described locating hole is positioned at the handing-over position of each longitudinal and transverse connecting plate.

4. electric precipitator cathode line according to claim 3, from tensioning fixture, is characterized in that being lined with cutting ferrule in described locating hole.

5. electric precipitator cathode line according to claim 4, from tensioning fixture, is characterized in that the internal diameter of described cutting ferrule from up to down reduces.

According to the electric precipitator cathode line described in claim 1 or 2 or 3 or 4 or 5 from tensioning fixture, it is characterized in that described underframe is fixed on the lower part box of electric cleaner by flower basket bolt and from heating Anti-dew insulating bar tractive.